A great concept, and well executed. Calming, relaxing, but still challenging. Just the kind of gameplay I enjoy in a puzzle game. I did find the last level a little frustrating, as there was no way to backtrack through portals if I chose the wrong one, without first changing colour. Also, since you plan to continue development, it is worth exploring accessibility options for players with colour blindness. A great jam game, and I'll keep an eye out for future versions! Well done!