I have highlighted the names on my Model T and my wife's 550, removed all of the PC "dumbass" stickers to give both machines a "cleaner" look, and made my own detachable flag holder.
Thanks... may have to pick up some red to do mine (although recessed lettering on the front and bossed on the rear trunk) !!As for the highlighting, I used a piece of "automotive" grade self stick vinyl my local Carquest got from one of their suppliers. I believe it was the people they get their pinstripping and paint supplies from. It's very similar to the stuff that was used to put "racing" stripes on vehicles. It's designed for the outdoors. I removed each piece of plastic and thoroughly cleaned it to remove any dirt, residues,etc. I then cut a rectangular piece of the vinyl slightly larger than the letter I was covering. I applied it to the plastic and "burnished" it on using a soft cloth. Finally, I traced around the edge of the letter with a very sharp X-Acto knife. I "burnished" it one more time afterwards. It is time consuming, but the raised lettering made it easier to trace. I only did the letters on the back of Jena's machine as the ones on front are recessed and I'm not sure if I can do it and have good results. I will eventually try. If you decide to do this, make sure you get excess material, 'cause you will make a few mistakes. I also have enough left to redo several letters if they get damaged.