Alright, Im not sure there is a way to color code a game name without some sort of program, but there is a way to color your profile (char description)

Heres how it goes:

Open a text document, hold alt and press 00255 this will make ÿ.

Now that you've got the symbol, simply copy it and tab to diablo, in diablo
go into your profile, anywhere and paste it.

Now your not done, you have to use color coding (1 red, 2 green, etc.. also ; makes a color think its purple)

Now you would past the ÿ and you cant see it, so its there, and press C, you wont see the letter c either and after C you would put a number or symbol (1 - 9 or ; ' etc)

So far you should have ÿc1 (using 1 as a example number, and note you will not see ÿc1-9 at all) After that type your text. Doing the ÿc + another number will give you a diffrent color, play with this.

(This will not work on game names!, game color names are done with a program that coverts ÿ to a - so you can use the symbols!)