Thanks for playing :)
I'll have a look for that bug in the "cutscene". It was a tricky bit to get right. Thanks for the tip about the rainbow power. I wanted to do some more dialog to signpost things (e.g. Firing rainbows and needing to kill the Color Vampires.) but I ran out of time. Hadn't thought about the issue with the projectiles. I did want to try and get more things drawing outside the color drain areas to make them stand out more (e.g. monsters and bullets), again beaten by the clock. Was my first Jam so got killed by scope creep :D
The boss fight bug was fixed 2 mins after submission unfortunately.