Actually, if you remember ArmaHero12, although he's not an admin, he made his own profile box, so if any user wants to make his or her own profile box, then feel free to do so: you have my go ahead.
If you want to know how to make your own template box, I would highly suggest looking at one of the editing pages of the profile box templates as a guide, such as this one: Template:CatboyBox. Make a new page, name it Template:(whatever the title may be), select Design, and follow the template design from one of the existing template's editing page. Then replace the color codes with the color codes you want according to this website here. If you want a specified color, though, you may need to look it up online.