Sorry if I missed it, but is there a specific reason why the buttons at the bottom are a lighter shade of blue than the level information? I assume it's to differentiate between what is clickable and what is not, but these two colours seem to somewhat collide with each other.
Your guess re: "why" is spot on; and I'm 100% open to changing the color. It's done via hue adjustment (sat / lum adjustment is also possible, they just
currently aren't changed), not a seperate graphics file.
I could also consider an underline, but I don't know if this would be obvious. It's a game, not a website, underline might not be taken to imply "clickable".