Update UI: tweak fab color

V2rayNG/app/src/main/res/drawable/ic_rounded_corner_grey.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="@color/color_fab_grey"/>
+    <solid android:color="@color/color_switch_fab_grey"/>
     <corners android:radius="20dp"/>
     <padding android:left="0dp" android:top="0dp" android:right="0dp" android:bottom="0dp" />
 </shape>

V2rayNG/app/src/main/res/layout/activity_logcat.xml

@@ -3,7 +3,8 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:padding="10dp"
+    android:paddingStart="10dp"
+    android:paddingEnd="10dp"
     tools:context=".ui.MainActivity">
 
     <ProgressBar

V2rayNG/app/src/main/res/values-night/colors.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="color_fab_grey">#424242</color>
+    <color name="color_switch_fab_grey">#424242</color>
+    <color name="color_fab_grey">#646464</color>
     <color name="color_secondary">#BDBDBD</color>
     <color name="colorSelected">#FFFFFF</color>
     <color name="colorUnselected">#222222</color>

V2rayNG/app/src/main/res/values/colors.xml

@@ -4,7 +4,8 @@
     <color name="colorPingRed">#FF0099</color>
     <color name="color_fab_orange">#f97910</color>
 
-    <color name="color_fab_grey">#CDCDCD</color>
+    <color name="color_switch_fab_grey">#CDCDCD</color>
+    <color name="color_fab_grey">#9C9C9C</color>
     <color name="color_secondary">#727272</color>
     <color name="colorSelected">#000000</color>
     <color name="colorUnselected">#FFFFFF</color>