We’ve found that our original Raptor Sheen (HHRS) is NOT compatible with Mr Color paints. We will be releasing a Raptor Sheen formulated for use with Mr Color paints. It will be called Raptor Sheen MR with a part number of HHRM. This new product should be available direct from Hawkeye’s Hobbies early next week, and from our retail partners by weeks end.