If it helps, here's the code for what's in my signature. You could take what's there and adapt it to what you want to do.
Remove the spaces, of course.
[ font="symbol" ][ size="6" ][ b ][ color="darkblue" ]K[ /color ][ color="royalblue" ]K[ /color ][ color="darkblue" ]G[ /color ][ /size ][ /b ][ /font ]
[ color="royalblue" ]The owl, the key, the fleur de lis, the blue and blue...that's for me! Rah-rah for KKG![ /color ]
-Megan, who would rather do anything than study for finals at the moment.