@MaxOfMetal A few months ago I did a decent search for anything other than black and black-purple/red/blue/white and didn't find any other colors that were actually being sold. I haven't seen many cosmetic analogs to anything other than ebony, either. Would be cool to know.
Here's the pre-made boards: https://www.richlite.com/fretboards
If you're interested in cutting down a partial sheet there are more plain options.
You can order direct, or they'll give you a list of vendors that have the particular product you want in stock.