I dont use sharpie's on trim, I used them on the frosted area on the windows , for trim , I mask the body and use a either a flat black or semi gloss black paint. I agree , they do run and bleed so you cant expose them to solvents, which again , for what I use them for, they are perfect, I don't use paint or solvents on windows, so no worry there unless I want to tint the windows, then I must do it first.