Tex Green Alternative with Rit Dyemore?

I want to give my charcoal reeds a green tint for an H1 look, I was curious if there’s a rit dyemore color mix that could be a close match to the original “Tex-Green”

Mixing their green and blue, with an approximate 3:4 ratio might work. You’ll need to fade the grey first though, if you’re expecting visible results.

Emerald Green is one option

How much Rit color remover should I use to lightly fade the charcoal?

Try one box in a filled washer machine. Industrial clothing is built tough so it sometimes takes a bit of work to affect it, let alone fade/soften it.

However, best to experiment around. Try half a box first to see what happens. Its better to do less than too much.