Been there, done that as they say. Read this thread:
In short: I couldn’t find a commercial one and build my own, based on the theoretical argument that individual R, G, and B was better. Going the extra mile to use a monochromatic sensor and combining in software seemed too much, but I get “good” and reproducible color with everything in software linear and neutral. Do I get better colors than with broad spectrum daylight? Don’t know since I didn’t objectively compare, but at least I’m using something that’s theoretically the best way 
Anyhow, it seems that commercial versions would become available, and yes, professional built scanner use trichromatic light sources.