I like the idea, but as others have said, the puzzles were too easy. Sokoban is known for very difficult puzzles which often require planning and exact movements of the boxes. An idea you could try out to help improve the level design, is take some sokoban levels (either originals or other levels that people have made) and trial and error tweak them to use different combinations of your colors. 

Congrats on your first title! As you said in your end credits, I hope this inspires you to keep experimenting and working on games :)

NIce game :)
The puzzles were a little easy but the idea is nice.
You can try give the players tilebased movement when you hold the button instead of when you press it (like in this video https://www.youtube.com/watch?v=mbzXIOKZurA&t=13s).

other than that very nice game. i liked the music but it was too loud. Keep it up! :D

Cool little puzzle game. The level design doesn't seem to really justify having the two characters though.  I felt that almost all of the levels could be beaten with just one character and having to switch to the other was just a hassle. Try designing the levels to be more narrow so that the other characters hitbox can play a role in how you solve puzzles.

Maybe also a volume slider too.

Overall good game though.

Cool game. I wish levels were little bit harder, for now order doesnt matter too much.

Really Interesting Game