It's a nice start, would be great to see how this could develop and have more features to it.

Nice prototype! The graphics are good enough and the gameplay is simple and enjoyable. 

It's a great prototype! It showcases core mechanics and allows you to experiment really easily.

I have some advice, such as having a difficulty curve, maybe more gates, different speeds of people walking, maybe people even having two pieces of the same clothing (like an inside shift that peaks out at some point), but since this is a prototype, I'm guessing you already wanna do a lotta that stuff. 

Anyway good job!

The idea is great, although I'm not sure if I should be rejecting anyone with any single 1 of those 3 colors, or only people that had all 3. It's definitely a good start to engaging gameplay, forcing the player to pay attention to detail!

great start to something that could be fun and engaging for sure. just gotta have a bunch more fellas rolling through the gates, potentially more color complexity, have some guys walk faster, wearing more clothes, etc. etc... but i'm certain you've already thought of that! lol anyways great ideas here