Hi,
I played your game a bit and colors look fine for me

it has a very nice game play and has very good potential.
a few issues and a bug i found :
I tried both dual joysticks and touch.
The touch system feels better for me, but the reaction is to slow and when tapping to shoot sometimes it shoots sometimes not.
The shooting speed of the dual j mode is to fast i think but if touch shooting works better it is ok i think.
In dual j mode when i hit a chest (not boss chest) from the bottom and pull up i can drag the chest upwards
I guess the chest has a collider and a trigger?
and it needs it when building the level to hit the floor?
If so maybe you can disable the collider and rigidbody when on the floor position?