Fullscreen support makes a lot of sense, I don't think I can do much to implement it in this game without remaking all of my assets, but I'm going to do some research and figure out how to add it to my framework so it will be present in future games.
I've heard similar complaints about the contrast of the zodiac symbols from some local friends who've checked out the game, so I don't think it's just you. I may have my monitor calibrated wrong because they were very visible to me, but it's definitely been an issue for others.
Thank you for playing, I'm glad you enjoyed the game, and I appreciate the feedback!