You have to go in and edit it. You go pick the background color, border color, text color for each different thing. The only way for another person to do it would be to log in as you and thats against the rules.
I'll experiment with mine to make a half-decent one, then re-post here later. Be warned, it'll probably be a long post. EDIT: Could you PM me a pic of you beds colour scheme if possible? I don't want to be making something on completely the wrong lines?