The glass is clear...if you want to make it really look good, drill out the plastic and fill the holes with Micro Glaze....Micro-Mark #80894. Costs a couple bucks and you just apply it at the corners of the hole and drag it across....when it dries, it looks like glass. Lots easier than cutting and fitting plexiglass, which I have been doing for years. Really great stuff. If you just want to paint over the plastic, use a very dark green or flat black and it will look OK..
Bill