My favorite keyboards are not backlit, and I was frustrated to have to put them aside after sunset. I ended up getting a small battery powered light and attaching it to the bottom of my desk. It shines on my lap, and lets me use non-backlit keyboards without any other lights on.
I was considering putting a light but my desk right now resembles a wall panel from the movie Brazil. https://www.youtube.com/watch?v=dht_3NziwSw Is hard to find the middle ground between clutter and chaos.
Is that an option for you?