There has been a minor update to the Wii Opera SDK’s ThreeDee class:  A new function called reColor, which allows the recoloring of a complete mesh object.  This function was made for use in WOS Trivia to allow the different colors in the answer blocks, but it is available to everyone.  It accepts three parameters, corresponding to the red, green, and blue, color values as unsigned bytes.  Thus, it is called like so: ThreeDee.reColor(255, 0, 0);.