Revised PS3 Buttons (originally used back in 2005 - as PS2 Buttons for GTA:SA):
Could - for example - be integrated as smiley icons.
Example based on GTA V Cheat Codes (quoted from reddit):
Raise Wanted Level
Lower Wanted Level
They are easy to read. Height is fixed to 38 pixels, width varies from 30 to 38 pixels. Image file format is *.png.
Since the xbox controller design has changed (from the original xbox to xbox360) i can't offer xbox360 buttons. The old xbox buttons wouldn't fit.