diff --git a/res/drawable/dark_blue_button.xml b/res/drawable/dark_blue_button.xml
new file mode 100644
index 00000000..a2bde68b
--- /dev/null
+++ b/res/drawable/dark_blue_button.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
+  ~ For more information, please, contact se.solovyev@gmail.com
+  ~ or visit http://se.solovyev.org
+  -->
+
+<shape xmlns:a="http://schemas.android.com/apk/res/android">
+	<gradient a:startColor="#000d1f"
+			  a:endColor="#002255"
+			  a:angle="90"/>
+    <corners a:radius="0dp" />
+</shape>
diff --git a/res/drawable/dark_violet_button.xml b/res/drawable/dark_violet_button.xml
new file mode 100644
index 00000000..b8553175
--- /dev/null
+++ b/res/drawable/dark_violet_button.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
+  ~ For more information, please, contact se.solovyev@gmail.com
+  ~ or visit http://se.solovyev.org
+  -->
+
+<shape xmlns:a="http://schemas.android.com/apk/res/android">
+	<gradient a:startColor="#2b0325"
+			  a:endColor="#4f1c47"
+			  a:angle="90"/>
+	<corners a:radius="0dp"/>
+</shape>
diff --git a/res/drawable/light_blue_button.xml b/res/drawable/light_blue_button.xml
index 6c2b2aca..4e0ef759 100644
--- a/res/drawable/light_blue_button.xml
+++ b/res/drawable/light_blue_button.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <shape xmlns:a="http://schemas.android.com/apk/res/android">
-	<gradient a:startColor="#002761"
-			  a:endColor="#005ce5"
+	<gradient a:startColor="#001c45"
+			  a:endColor="#003481"
 			  a:angle="90"/>
     <corners a:radius="0dp" />
 </shape>
diff --git a/res/layout-land/main.xml b/res/layout-land/main.xml
index f6172c11..81c635c3 100644
--- a/res/layout-land/main.xml
+++ b/res/layout-land/main.xml
@@ -20,9 +20,10 @@
 			<org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
 																   xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 																   a:id="@+id/leftButton"
-																   calc:textUp="↞"
-																   a:text="←"
-																   style="@style/control_button_style"
+																   calc:textUp="◀◀"
+																   a:text="◀"
+																   calc:directionTextScale="0.5"
+																   style="?controlButtonStyle"
 																   a:onClick="moveLeftButtonClickHandler"
 																   a:layout_width="match_parent"
 																   a:layout_height="match_parent"
@@ -33,7 +34,7 @@
 														   xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 														   a:id="@+id/eraseButton"
 														   a:drawableTop="@drawable/sym_keyboard_delete"
-														   style="@style/control_image_button_style"
+														   style="?controlImageButtonStyle"
 														   a:onClick="eraseButtonClickHandler"
 														   a:layout_width="match_parent"
 														   a:layout_height="match_parent"
@@ -50,7 +51,7 @@
 														   a:id="@+id/clearButton"
 														   a:text="@string/c_clear"
 														   a:textStyle="bold"
-														   style="@style/control_image_button_style"
+														   style="?controlImageButtonStyle"
 														   a:onClick="clearButtonClickHandler"
 														   a:layout_width="match_parent"
 														   a:layout_height="match_parent"
@@ -59,9 +60,10 @@
 			<org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
 																   xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 																   a:id="@+id/rightButton"
-																   calc:textUp="↠"
-																   a:text="→"
-																   style="@style/control_button_style"
+																   calc:textUp="▶▶"
+																   a:text="▶"
+																   calc:directionTextScale="0.5"
+																   style="?controlButtonStyle"
 																   a:onClick="moveRightButtonClickHandler"
 																   a:layout_width="match_parent"
 																   a:layout_height="match_parent"
diff --git a/res/layout/calc_clear_button.xml b/res/layout/calc_clear_button.xml
index 3fd23042..302afc60 100644
--- a/res/layout/calc_clear_button.xml
+++ b/res/layout/calc_clear_button.xml
@@ -11,5 +11,5 @@
 			 a:id="@+id/clearButton"
 			 a:text="@string/c_clear"
 			 a:textStyle="bold"
-			 style="@style/control_image_button_style"
+			 style="?controlImageButtonStyle"
 			 a:onClick="clearButtonClickHandler"/>
\ No newline at end of file
diff --git a/res/layout/calc_copy_button.xml b/res/layout/calc_copy_button.xml
index f355567c..25349d3a 100644
--- a/res/layout/calc_copy_button.xml
+++ b/res/layout/calc_copy_button.xml
@@ -10,5 +10,5 @@
 			 xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 			 a:id="@+id/pasteButton"
 			 a:drawableTop="@drawable/copy"
-			 style="@style/control_image_button_style"
+			 style="?controlImageButtonStyle"
 			 a:onClick="copyButtonClickHandler"/>
\ No newline at end of file
diff --git a/res/layout/calc_donate_button.xml b/res/layout/calc_donate_button.xml
index dbf2b420..35b7e7c5 100644
--- a/res/layout/calc_donate_button.xml
+++ b/res/layout/calc_donate_button.xml
@@ -10,5 +10,5 @@
 			 xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 			 a:id="@+id/pasteButton"
 			 a:drawableTop="@drawable/heart"
-			 style="@style/control_image_button_style"
+			 style="?controlImageButtonStyle"
 			 a:onClick="donateButtonClickHandler"/>
\ No newline at end of file
diff --git a/res/layout/calc_equals_button.xml b/res/layout/calc_equals_button.xml
index 11a5eb96..5bb61c7a 100644
--- a/res/layout/calc_equals_button.xml
+++ b/res/layout/calc_equals_button.xml
@@ -11,5 +11,5 @@
 		a:text="="
 		a:layout_width="match_parent"
 		a:layout_height="match_parent"
-		style="@style/control_button_style"
+		style="?controlButtonStyle"
 		a:onClick="numericButtonClickHandler"/>
\ No newline at end of file
diff --git a/res/layout/calc_erase_button.xml b/res/layout/calc_erase_button.xml
index bf6c7057..cf59ee93 100644
--- a/res/layout/calc_erase_button.xml
+++ b/res/layout/calc_erase_button.xml
@@ -10,5 +10,5 @@
 			 xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 			 a:id="@+id/eraseButton"
 			 a:drawableTop="@drawable/sym_keyboard_delete"
-			 style="@style/control_image_button_style"
+			 style="?controlImageButtonStyle"
 			 a:onClick="eraseButtonClickHandler"/>
\ No newline at end of file
diff --git a/res/layout/calc_history_button.xml b/res/layout/calc_history_button.xml
index 210556c0..732f86b1 100644
--- a/res/layout/calc_history_button.xml
+++ b/res/layout/calc_history_button.xml
@@ -11,7 +11,7 @@
 													   a:text="@string/c_history_button"
 													   calc:textUp="@string/c_undo"
 													   calc:textDown="@string/c_redo"
-													   style="@style/control_button_style"
+													   style="?controlButtonStyle"
 													   a:textSize="18dp"
 													   a:textStyle="bold"
 													   a:onClick="historyButtonClickHandler"/>
\ No newline at end of file
diff --git a/res/layout/calc_left_button.xml b/res/layout/calc_left_button.xml
index b4b3d283..94a44505 100644
--- a/res/layout/calc_left_button.xml
+++ b/res/layout/calc_left_button.xml
@@ -9,7 +9,8 @@
 <org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
 													   xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 													   a:id="@+id/leftButton"
-													   calc:textUp="↞"
-													   a:text="←"
-													   style="@style/control_button_style"
+													   calc:textUp="◀◀"
+													   a:text="◀"
+													   calc:directionTextScale="0.5"
+													   style="?controlButtonStyle"
 													   a:onClick="moveLeftButtonClickHandler"/>
\ No newline at end of file
diff --git a/res/layout/calc_paste_button.xml b/res/layout/calc_paste_button.xml
index d592b9f8..45e383ab 100644
--- a/res/layout/calc_paste_button.xml
+++ b/res/layout/calc_paste_button.xml
@@ -10,5 +10,5 @@
 			 xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 			 a:id="@+id/pasteButton"
 			 a:drawableTop="@drawable/paste"
-			 style="@style/control_image_button_style"
+			 style="?controlImageButtonStyle"
 			 a:onClick="pasteButtonClickHandler"/>
\ No newline at end of file
diff --git a/res/layout/calc_right_button.xml b/res/layout/calc_right_button.xml
index a3166423..c3855471 100644
--- a/res/layout/calc_right_button.xml
+++ b/res/layout/calc_right_button.xml
@@ -9,7 +9,8 @@
 <org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
 													   xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 													   a:id="@+id/rightButton"
-													   calc:textUp="↠"
-													   a:text="→"
-													   style="@style/control_button_style"
+													   calc:textUp="▶▶"
+													   a:text="▶"
+													   calc:directionTextScale="0.5"
+													   style="?controlButtonStyle"
 													   a:onClick="moveRightButtonClickHandler"/>
\ No newline at end of file
diff --git a/res/layout/calc_vars_button.xml b/res/layout/calc_vars_button.xml
index ec814a4d..f23111df 100644
--- a/res/layout/calc_vars_button.xml
+++ b/res/layout/calc_vars_button.xml
@@ -11,4 +11,4 @@
 													   a:text="π,…"
 													   a:textStyle="italic"
 													   a:onClick="varsButtonClickHandler"
-													   style="@style/control_button_style"/>
\ No newline at end of file
+													   style="?controlButtonStyle"/>
\ No newline at end of file
diff --git a/res/values-ru/strings.xml b/res/values-ru/strings.xml
index 642e793d..6a7c99f2 100644
--- a/res/values-ru/strings.xml
+++ b/res/values-ru/strings.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-	<string name="c_app_name">Калькулятор</string>
-	<string name="c_app_settings">Калькулятор</string>
+	<string name="c_app_name">Калькулятор++</string>
+	<string name="c_app_settings">Настройки</string>
 	<string name="c_syntax_error">Ошибка</string>
 	<string name="c_result_copied">Результат скопирован в буфер!</string>
 	<string name="c_settings">Настройки</string>
@@ -75,5 +75,12 @@
 	<string name="c_history_is_empty">История пуста!</string>
 	<string name="c_app_history">История</string>
 	<string name="c_char_is_not_accepted">Символ \'%s\' не допустим в названии переменной!</string>
+	<string name="c_calc_theme">Тема оформления</string>
+	<string name="p_default_theme">По умолчанию</string>
+	<string name="p_violet_theme">Фиолетовая</string>
+	<string name="p_light_blue_theme">Голубая</string>
+	<string name="c_calc_result_precision_summary">Точность результата(все вычисления производятся максимально точно)</string>
+	<string name="c_calc_color_display_summary">Включает/выключает подсветку синтаксиса в поле редактирования калькулятора</string>
+	<string name="c_calc_theme_summary">Устанавливает тему оформления приложения</string>
 
 </resources>
diff --git a/res/values/arrays.xml b/res/values/arrays.xml
index eebb966c..5c57dc96 100644
--- a/res/values/arrays.xml
+++ b/res/values/arrays.xml
@@ -6,9 +6,9 @@
 
 <resources>
 	<string-array name="p_theme_names">
-		<item>Default</item>
-		<item>Violet</item>
-		<item>Light blue</item>
+		<item>@string/p_default_theme</item>
+		<item>@string/p_violet_theme</item>
+		<item>@string/p_light_blue_theme</item>
 	</string-array>
 	<string-array name="p_theme_values">
 		<item>default_theme</item>
diff --git a/res/values/attrs.xml b/res/values/attrs.xml
index dbfabffb..62a9826e 100644
--- a/res/values/attrs.xml
+++ b/res/values/attrs.xml
@@ -12,5 +12,7 @@
 	</declare-styleable>
 
 	<attr name="digitButtonStyle" format="reference" />
+	<attr name="controlButtonStyle" format="reference" />
+	<attr name="controlImageButtonStyle" format="reference" />
 
 </resources>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 604d8e0b..f61e1a53 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string name="c_app_name">Calculator</string>
-    <string name="c_app_settings">Calculator</string>
+    <string name="c_app_name">Calculator++</string>
+    <string name="c_app_settings">Settings</string>
     <string name="c_syntax_error">Syntax error</string>
     <string name="c_result_copied">Result copied to clipboard!</string>
 	<string name="c_settings">Settings</string>
@@ -76,4 +76,10 @@
 	<string name="c_app_history">History</string>
 	<string name="c_char_is_not_accepted">Character \'%s\' is not accepted in variable name!</string>
 	<string name="c_calc_theme">Theme</string>
+	<string name="p_default_theme">Default</string>
+	<string name="p_violet_theme">Violet</string>
+	<string name="p_light_blue_theme">Light Blue</string>
+	<string name="c_calc_result_precision_summary">Precision of result value (all calculations are done with maximum precision regardless of the value of this option)</string>
+	<string name="c_calc_color_display_summary">Enables/disables colouring and styling in calculator editor</string>
+	<string name="c_calc_theme_summary">Sets the theme for calculator</string>
 </resources>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 38631ef0..9eb4eb98 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -30,9 +30,25 @@
 		<item name="android:background">@drawable/light_blue_button</item>
 	</style>
 
-	<style name="control_button_style" parent="button_style"/>
+	<style name="default_control_button_style" parent="button_style"/>
 
-	<style name="control_image_button_style" parent="control_button_style">
+	<style name="violet_control_button_style" parent="button_style">
+		<item name="android:background">@drawable/dark_violet_button</item>
+	</style>
+
+	<style name="light_blue_control_button_style" parent="button_style">
+		<item name="android:background">@drawable/dark_blue_button</item>
+	</style>
+
+	<style name="default_control_image_button_style" parent="default_control_button_style">
+		<item name="android:padding">6dp</item>
+	</style>
+
+	<style name="violet_control_image_button_style" parent="violet_control_button_style">
+		<item name="android:padding">6dp</item>
+	</style>
+
+	<style name="light_blue_control_image_button_style" parent="light_blue_control_button_style">
 		<item name="android:padding">6dp</item>
 	</style>
 
@@ -68,14 +84,20 @@
 
 	<style name="default_theme">
 		<item name="digitButtonStyle">@style/default_digit_button_style</item>
+		<item name="controlButtonStyle">@style/default_control_button_style</item>
+		<item name="controlImageButtonStyle">@style/default_control_image_button_style</item>
 	</style>
 
 	<style name="violet_theme">
 		<item name="digitButtonStyle">@style/violet_digit_button_style</item>
+		<item name="controlButtonStyle">@style/violet_control_button_style</item>
+		<item name="controlImageButtonStyle">@style/violet_control_image_button_style</item>
 	</style>
 
 	<style name="light_blue_theme">
 		<item name="digitButtonStyle">@style/light_blue_digit_button_style</item>
+		<item name="controlButtonStyle">@style/light_blue_control_button_style</item>
+		<item name="controlImageButtonStyle">@style/light_blue_control_image_button_style</item>
 	</style>
 
 </resources>
diff --git a/res/xml/main_preferences.xml b/res/xml/main_preferences.xml
index efc486d3..7c266342 100644
--- a/res/xml/main_preferences.xml
+++ b/res/xml/main_preferences.xml
@@ -7,20 +7,22 @@
 		<org.solovyev.android.view.prefs.NumberPickerDialogPreference
 				a:key="@string/p_calc_result_precision_key"
 				a:title="@string/p_calc_result_precision_title"
+				a:summary="@string/c_calc_result_precision_summary"
 				a:defaultValue="5"
 				range:boundaries="0;10"/>
 
 		<android.preference.CheckBoxPreference
 				a:key="@string/p_calc_color_display_key"
+				a:summary="@string/c_calc_color_display_summary"
 				a:title="@string/c_calc_color_display_title"
 				a:defaultValue="true"/>
 
 		<ListPreference a:key="@string/p_calc_theme_key"
 						a:title="@string/c_calc_theme"
 						a:entries="@array/p_theme_names"
+						a:summary="@string/c_calc_theme_summary"
 						a:entryValues="@array/p_theme_values"
 						a:persistent="true"
-						a:defaultValue="2"
 						a:shouldDisableView="false"/>
 
 
diff --git a/src/main/java/org/solovyev/android/calculator/CalculatorHistoryActivity.java b/src/main/java/org/solovyev/android/calculator/CalculatorHistoryActivity.java
index 09e156d0..788a4ba3 100644
--- a/src/main/java/org/solovyev/android/calculator/CalculatorHistoryActivity.java
+++ b/src/main/java/org/solovyev/android/calculator/CalculatorHistoryActivity.java
@@ -14,13 +14,13 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.*;
 import org.jetbrains.annotations.NotNull;
+import org.solovyev.common.utils.*;
 import org.solovyev.common.utils.Filter;
-import org.solovyev.common.utils.FilterRule;
-import org.solovyev.common.utils.FilterRulesChain;
-import org.solovyev.common.utils.StringUtils;
 
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 
 /**
@@ -62,6 +62,13 @@ public class CalculatorHistoryActivity extends ListActivity {
 	private static List<CalculatorHistoryState> getHistoryList() {
 		final List<CalculatorHistoryState> calculatorHistoryStates = new ArrayList<CalculatorHistoryState>(CalculatorHistory.instance.getStates());
 
+		Collections.sort(calculatorHistoryStates, new Comparator<CalculatorHistoryState>() {
+			@Override
+			public int compare(CalculatorHistoryState state1, CalculatorHistoryState state2) {
+				return state2.getTime().compareTo(state1.getTime());
+			}
+		});
+
 		final FilterRulesChain<CalculatorHistoryState> filterRulesChain = new FilterRulesChain<CalculatorHistoryState>();
 		filterRulesChain.addFilterRule(new FilterRule<CalculatorHistoryState>() {
 			@Override
diff --git a/src/main/java/org/solovyev/android/calculator/CursorDragProcessor.java b/src/main/java/org/solovyev/android/calculator/CursorDragProcessor.java
index f14ce212..29f75f21 100644
--- a/src/main/java/org/solovyev/android/calculator/CursorDragProcessor.java
+++ b/src/main/java/org/solovyev/android/calculator/CursorDragProcessor.java
@@ -34,9 +34,9 @@ public class CursorDragProcessor implements SimpleOnDragListener.DragProcessor{
 
 		if (dragButton instanceof DirectionDragButton) {
 			String text = ((DirectionDragButton) dragButton).getText(dragDirection);
-			if ("↞".equals(text)) {
+			if ("◀◀".equals(text)) {
 				cursorControl.setCursorOnStart();
-			} else if ("↠".equals(text)) {
+			} else if ("▶▶".equals(text)) {
 				cursorControl.setCursorOnEnd();
 			}
 		}