I think you can afford to increase the widths of the bars to improve the readability. Also maybe increase the intensity of the colors for the bars. Will they be hollow when depleting or will they have some background? Make sure they are readable at just a glance which is something that gets more important the faster the pace of the game is.
I was thinking a white background as they deplete, like this:
but I'm not entirely sure on it. Ignore the weird coloration on the ornament. I forgot to increase my color count on the save file. haha
As for the readability, this is what they look like in terms of scale in-game:
Think that's alright for readability?
the compass definitely needs more contrast, it's a bit hard to see.
I'm a bit colorblind, though, so I'm a bit biased against red-on-greenish-colors.
It could definitely use some contrast, but I'm not too sure on how to do it. Perhaps a solid black background instead of the dithered one. (Also, it's supposed to be a clock.
)