Personally, I would never color change a car unless you're doing it right. AKA, stripping the entire interior, engine bay, trunk etc and painting everything. All of the evidence of the old color will be everywhere and it would bug the heck out of me.
I'm also SSM and getting repainted soon. To kinda switch it up, I'm going with a SSM and then 3 stage with pearl on top of the SSM. Just an idea. Post pics when done!