Mmkay so I know it's a popular headcannon that the Trolls' skin tones are tinted very slightly with their blood color. Sooooooo... I made you guys a reference chart! If you want it. 'Cause I mean... this shit can be handy. So just. Take it. Woo.
I got the blood colors from this:
glorious chart. ~fir3h34rt
has given each of the other blood colors, for all of your fantroll needs.
Also, if you want to get a skin tone like I made, but you want to use a different color, I put the saturation (S) at 18 and the value/lightness (V/L) at 192. So yeah. I guess you don't even need me now.
Go ahead and download it, but a fave is appreciated.