I would recommend that you have a gauge next to the play board with the colors and what they mean, ranked from close to far, so it's easy to understand. I actually took bright red to be closer to the answer then dim red/black, so I totally wiffed on the answer. Having that info on the play area would help prevent that mistake.
Hey, I just released a new update that adds multiple color schemes to help with colorblindness! At some point I may add a color blind mode that does away with the need for colors altogether, but for now this should make things a bit better. Also, there is now a gauge next to the board so you can more easily see the range of colors (unfortunately, it doesn't yet work on Firefox).
Check it out!
I also skipped forward a day, so if you already played today you can play again with the next word to try it out.
That's why I added the examples with descriptions, but I can understand if they were unclear. I can add a gauge to the game board, thanks for the recommendation