Fix the long-text resizing on the ColorButton

The ColorButton has been refactored and
the text resizing went wrong.

CM10: http://db.tt/4uCUOs8A
CM10.1 before: http://db.tt/aUrwX7bp
CM10.1 after: http://db.tt/im4A91AK

Change-Id: I40c2ea4d5852b35fcf54460f4494c4b40dacc7f6