My cabinets all up and running but I need to do alot of finish touches

To either side of the screen go 2 bits of wood which help support the plexiglass, from what I can tell, the monitor bezel was actually supposed to go infront of the wood to hide it, but I didn't want the monitor right in my face. What I need is a simple black box running along the edges of the glass to cover up the wood, but I'm not sure how to do it.
Do I need some kind of print, or would maybe paint do a better job?