Made in under 12 hours from start to finish with Construct 2. Getting hit knocks you back, getting pushed or falling off screen kills you. The colors do nothing. The music was the stupidest I could find in my personal library, so yes I know it sucks.
Note that this game was made with touch only in mind, using keyboard to jump is the easy way out.
Controls: Click the guy to jump (or press a key on your keyboard). Click anywhere on screen other than guy to shoot.