The name colors on the forums are created like this.
I take the photo of your pokémon in the clan header show above from this website.
http://gallery.gtsplus.net/I then take the photo to paint, were I use the "Pick color" tool.
I then select the majority color of the pokémons body.
I go into "Colors" then "Edit Colors" then "Define Custom Colors" where it shows me the Red, Green, and Blue color combinations to create your pokemons color.
I then come here, onto the website and paste all 3 color numbers to create the exact color of your pokemon.
I figured it would be cool to share w/ you guys that the name colors are exact. =]