You're really going to make the color order on the left side: Blue, Red, Green. What are you, Satan?
Selecting my specific color of choice was an unforgiving, painful process. I had to come up with 2 strats:
1. The most specific channel goes first, so if I mess up restart doesn't hurt me as much
2. Forbidden quick mouse flick technique, where I just quickly flick my mouse near the edge/corner of the box so I only increase it's value for like 2 or in some lucky cases 1.
I absolutely hated using it and the pain forced me to develop new techniques and think about my strategies. Also, I appreciate the impracticality and annoyance level you were able to reach with such a simple and straightforward design.
Great job overall! I'll consider forgiving you for making me use it :)