Here's a link that has all the colours you can use when you edit your profile.
Verry helpfull when u can't find the right word for the colour or the number for the colour. Happy editing
Nice tip Saphira (your link has one HTTP too much though )
If you are looking for a color for your background, you can actually use whichever color you want. Just create a 1x1 pic with the color you want and then use it as a background repeated both vertically and horizontally.
If you own Adobe Photo Shop, Just click the colour picker and mix whatever colour you may need,
The Html colour code can be found at the bottom besides the #