Use the rectangular images below to reflect mouseOver or onClick actions by the user.  
 
Pick up more tips in the buttons section.
The images are fairly large so you'll have a good relationship between size options and resolution/quality.

I've rendered the full image for each button rather than just the button areas in order that all the 3D depth and reflections will be present and correct for each altered state. This produces some interesting images which can also be used as design elements.

 

cushion
green

arrow

 

purple

top hat

 

spikes

red

 

big texture

star whirl

 

teal

copper

 

silver

 

design elements