I am glad the linestyles help you out. Seeing almost 10% of the population is color blind in one way or another, it is surprising there isn't more accomodation for it.
The music bug is known. For some reason it is getting set to mute. Havn't tracked down why that is occurring. Going to the pause screen or main menu should show a speaker icon in bottom left corner to unmute the music.
I also think the game isn't in the best place to keep you in the flow, but I have a few more ideas for tweaks.
Thanks for playing and the feedback.