I'll clarify what Ingredient said xD .
You have to open up the .material file in the preset folder and edit it. Depending on where you want your markings to be, you have to put that image file name. For example, if you wanted the left side of your character green, you have to make a separate file colored green or whatever you wanted to be on the left side. Then you take that file's name and enter it where it says material preset_3_bodyMatL. Same thing for the right side. ^^
material preset_3_bodyMatL
{
technique
{
pass
{
texture_unit
{
texture preset_3bodyleft.jpg
}
}
}
}
material preset_3_bodyMatR
{
technique
{
pass
{
texture_unit
{
texture preset_3body.jpg
}
}
}
}