If you go to advanced while on your PC in the "Quick Reply" box you can add smileys. You may actually be able to do them with the quick codes < example.. : ) = >
To change your colors highlight the text you'd like to change the color to and scroll to the "A" symbol next to sizes and then select which color. In wap mode, you may have to do short code "[C0L0R="DarkRed"] message here [/C0L0R]
Not sure if that would work though... Haven't tried.