Bic Mac Blue coveralls dyeing

Last post I’ll make about my pair of coveralls. I am thinking about dyeing them a bit and I want more of a darker grey/green color. Any tips on what to get to achieve the desired color?
Screenshot_20210902-131901.jpg

I am looking at maube rit dye, but don’t know if I should get graphite, dark green, or half and half. Another option for the rit dye is lemon yellow possibly?

Also if it helps here they are while I’m inside, same camera, same time of day
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Get Emerald green