Thanks for trying it out, i'm glad you enjoyed it!
The UX, especially concering the grid/tiles itself, was a real sticking point for me. I found it fairly difficult to build something that wasn't too distracting but also stood out from the limited palette.
Personally i don't think i nailed it in the end. I'd like to have made the tiles you could click way more obvious, but was a bit stumped/lacking for time. I still think it turned out okay enough for a jam in the end though!