I prefer writing the colors out.? But as explained above the way to combine bb coding is: Code: [color=red] [size=200] text here [/color] [/size] Of course there's many more colors you can choose from and sizes range from 1-200.
If you want to do a number-letter combination for colors, remember the # in front of it. Ex: [color=#D5BA73*]Text here[/color*] Without the asterisks: Text here