Cool concept, some sound and music would be welcome but i understand time is the enemy of a gamejam.
I had to chuckle a bit when it said "be careful of the white tile" because at that moment i just had played the white chararacter yet so everything was white.
I could cheese it a little bit as white character to walk on the edge so it would reveal where you would fall trough and some of the buttons were pressable from across the gap. But a nice game for a 10day jam