Very clear mechanic however had a quite steep learning curve as i had to remember each key that represents the colour and the speed was quite fast. Maybe a speed curve that increases to let the player get used to the game mechanic/fire colours. Other than that a really good game!!

I really like this game, because 

• it reminds me of the undyne fight in undertale ;)
• I like how you bring WASD a the arrow keys together
• it creates a really good athmosphere and I could play it for 20 minutes straight

The thing is, it is a bit too hard. You could make the canvas bigger, or the people slower or something, but that's it actually.

Cool game!