valve cover paint

[shogun]

samples here, although in my opinion some are a bit too much colorfull:
http://i11.ebayimg.com/01/i/000/9c/04/81f5_1.JPG
http://i23.ebayimg.com/01/i/000/9c/04/81c6_1.JPG
http://i10.ebayimg.com/01/i/000/9c/04/6257_1.JPG
http://i24.ebayimg.com/03/i/000/9c/04/62df_1.JPG
http://i15.ebayimg.com/03/i/000/9c/04/631c_1.JPG
http://i15.ebayimg.com/03/i/000/9c/04/631c_1.JPG
http://i11.ebayimg.com/07/i/000/9c/04/6299_1.JPG
http://i11.ebayimg.com/01/i/000/9c/04/81f5_1.JPG

[Milkboot]

If i had to pick, i like the 4th picture and some in the 5th picture, other then that i would only do it if my car was pretty enough to get such flashy things, or it matched the paint somewhere else :P

[Sidney Rough-Diamond]

///M stripes on non ///M cars looks cheesy.

[Macv]

A couple of those are pretty cool looking.

[M20Turbo]

I think the black looks good.

[Rus]

Black for the win. Although some of the more colorful ones look nice too, they'd be more suited to a modified engine rather than a stock one. Especially, as mentioned, M-stripes on non-M engines.

[nizmainiac]

the black ones the best without a doubt

[mikell]

Basic black.