If anyone could tell me how to make this body toner fits all the skin colors, like the other tones we have on site, I'd be really grateful <3 can tell I'm a newbie to all this jam? lol

Since you're shading the HA instead of highlighting, I suggest using an incredibly dark color and then lowering the opacity of the item to the desired effect. n_n For example, is a super dark brown (just a few shades darker could be black lol) with the opacity of the layer all the way down to 35%! Let me know if that helps or if you need more help / have questions ;)