Improve classic skins for Android

Major changes are:
- Modify the shadows of the major category buttons to keep consistency with other buttons.
- Change the color of the narrow frame on blue_darkgray skin.

This is just a cosmetic fix.  No functional change is intended.

TEST=manually done with Nexus 5 / Android 5.0.1 (LRX22C)

git-svn-id: a6090854-d499-a067-5803-1114d4e51264
5 files changed
tree: 7e31aefc01e06793778e8a98c2a7329445f77d7d
  1. src/