ΔE 14.2, fair: the same colour family, but not a straight swap. Green Yellow is noticeably darker, more saturated, warmer than Ghoul Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Green Yellow is noticeably darker, more saturated, warmer than Ghoul Skin.
The same difference applies the other way round: Ghoul Skin is noticeably lighter, more muted, cooler.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Ghoul Skin on the colour wheel See Green Yellow on the colour wheel
All matches: Ghoul Skin equivalents · Green Yellow equivalents