Change Category Count Color (and Page tab text color)

Hi ?? I need to be able to change the color of the category count numbers on my left sidebar as well as the font that’s on the page tabs just under my header. As it is, in both cases it’s dark grey and I can’t figure out how to change it to a readable color. I’m using the Mantra theme (just updated it day before yesterday, so it’s the most recent version). Thanks in advance!
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