Thanks everyone. Just wanted to add a bit more info I pm'd to someone in case anyone can use it.
Cooked these ribs on a chargriller. I just use a normal memphis style rub after coating with yellow mustard. That has to be my key to getting those colors and bark without using much sugar. I add nothing during the cook and I don't flip them. I just make sure to cook closer to 225 and take it easy. I cooked these with lots of smoke as my family loves that. I burnt up like 6 big chunks of cherry and hickory but this cooker is not known for being efficient.