I've mostly done some colour changes. I mostly just dislike neutral greys (maybe a bit too much).
Otherwise, I (half accidentally) turned your ticks into small bars. In my opinion the ticks in your version contrast too much with the bar they're in, but you can probably also solve this by decreasing the highlight as Eischiya said.
I agree with Eishiya about the green bar and the dark brown. You also have a dark green that is so similar to the dark blue that I didn't notice it until I almost finished my edit. I don't think that is necessary either.