ΔE 12.5, fair: the same colour family, but not a straight swap. Bright Green is more muted, cooler than Warpstone Glow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Bright Green is more muted, cooler than Warpstone Glow.
The same difference applies the other way round: Warpstone Glow is more saturated, warmer.
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 Warpstone Glow on the colour wheel See Bright Green on the colour wheel
All matches: Warpstone Glow equivalents · Bright Green equivalents