Thanks. I used AIM weathering powders and Valspar Clear Flat. The powders used were dark rust (110-3105), chalky white (110-3101), medium gray (110-3110), light rust (110-3106), dirty yellow (110-3104). Most of the powder disappears when the Clear Flat or any other sealer (including Dull-Cote) is applied so the application has to be a bit heavy to achieve the desired effect.