How do i change the color of my box in the shout box?

You'll need to get the from the cash shop or user shops.

Shoutbox Paintbrush

Purchased through the Cash Shop or User Shops.

thank you so very much , & . you two have been a great help .

:]

Aresome HA!! ^_^

: thank you ! -blushes- yours looks great as well . i love your scheme .

any one know if there is a set palate of colors or if we can choose what color we want some with code numbers?

It's a color wheel. You can choose basically whatever color you damn well please. And thank you, took me all day yesterday to come up with the items. xD