Range of numbers in a dark themed form

Hi!
I love the dark theme and what the UI design team has done with it. I just have a suggestion.
Sometimes, depending on the brightness of the screen, it is hard to spot the button tu adjust a range of numbers in a form because the button and the bar are almost the same color, so maybe changing the tone of either of them could improve the UX.

I’ll attach a picture of what i’m talking about:

Status Open
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