White looks good, silver as well. Somehow I also like the second gold, even though I would never buy it.

that silver is mine, mine i tell you.

I like that it has a good amount of real state for customization. to stuff like this...

White and other type of gold for me.

Price.. some colors are more expensive then other ones (production of red is more expensive then blue) and some may need more then 1 coating depending on the matrials used.. try going into a car paint shop and you'll see that prices are very different depending on colors...

These are the best looking easily. Especially white while the others look much too fake. It also reminded me of my special psp I still have somewhere...

I want the purple nurple one.

White looks nice the controller does not tho. Using white with black looks like child toys. Instead of black it should be dark grey looks much better.

The white and blue versions look incredibly sexy.

Yes... yes it does :D

Were those given to the developers by Sony, or did they mod them, themselves? 

@ OP

I LOVE the white and silver ones.  I hope Sony doesn't take forever to release new colors, cause they will help push sales quite a bit.