I accidentally tapped (I'm on mobile) after the solution showed up and it went away, and now l have no idea what it was :(

Wordle will show the result until the next day on refresh, you may want to do that to.

It's an interesting concept, but I think it lacks the "I'm getting closer" feeling from wordle because the "color grammar" is not so straightforward, i.e. I get 6 combinations that were close to the end result starting from different inputs. Maybe restrict to rainbow colors and use more inputs?

This way you can think "I need more red" or something like that.