Poster overlay based on filename

I’m sure this has been asked but I couldn’t find it using Google due to searches bringing up generic results but, is it possible for a skin to put a clear PNG over the poster image? Say I have a filename with 3D and I want the poster to just include an overly that has the 3D graphic over it. I’d like 1080p bluray file names to have poster scraped but with a bluray box overly on all movies. I’m using a raspberry pi 3 with openelec and the default skin. Any suggestions on a skin or way to include it would be greatly appreciated!