I like it. But I got deadlocked on level 2. That was a big difficulty jump because you both added another color and made the playing area more narrow. You should change one of those details or the other from one level to the next, not both. Also it may make the game easier to balance if you just add a shuffle feature when there are no more matches.
I had no idea what anything on the GUI panel on the left meant because I couldn't see all of it. I have a 1600x900 monitor and for some reason several of the games in this jam just won't fit.
If you haven't already, could you please rate my team's game? I'd much appreciate it.