There's a Mod
here. It will make beams rendered with simpler model, but they would be able to obtain color like cannons and missiles can.
Personally, I just turn beams off and turn them on at rare ocassions. Placing a glass block in front of a camera supposed to neutralize beam rendering as well, so you can have cruise camera on top for flying around, and mining camera enclosed by glass in the middle of mining array, specifically for mining.