This has got to be my favourite comment. So much good feedback, thank you so much!
I am super glad you liked the game (and apparently also did super well, what is your highscore?)
Also thanks for the bug reports! I wasn't aware of those and will make sure to fix them as soon as the jam is over.
The difficulty sure is hard, and I can understand why it could frustrate some people, even though it was a choice to make the game challenging.
The skin idea is absolutely great, and definitely something I'll look into! I would definitely make the progression more interesting. Thank you for the suggestion, it's gold.
As for the additional colour, it was something I wanted to do during the development, but to respect the rules of the jam I had to limit the game to two colours. I do think it would add to the readability and again, it's probably something I will add when I update the game after the jam.
Thanks again for the valuable feedback and nice words, really made my entire day!