Peal the masking and let it dry for an hour. Now mask around the high areas and use 1000 grit lightly and a bit of acetone for the large flat areas. Don't use it for the letters or you will be painting the black again... Good enough as we will buff out the letters on the buffer later after the paint drys. Did both in less than 60 minutes. The clips on the back were coming loose so a bit of epoxy will keep them secured.
Lastly I shot Kurts speaker kickpanels with OER Turquoise and installed the speakers in them... looks cool!