I had it professionally installed along with window tint. It’s a straightforward process of using blue painters tape to make a grid around the existing letters, using a heat gun to carefully soften the adhesive, removing the existing letters with plastic scraper or dental floss, cleaning the...
Another option is Transparent. That’s what I did to add contrast without adding color on Volcano Grey Metallic. It compliments the rest of the clear taillights and is actually clear so it picks up the red on the light bar at night.