Scarab Green vs Green Morkshroom

How close are they?

ΔE 6.4, close: similar, with a visible difference side by side. Green Morkshroom is a little darker, warmer than Scarab Green.

Can I use Green Morkshroom instead of Scarab Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Green Morkshroom is a little darker, warmer than Scarab Green.

Can I use Scarab Green instead of Green Morkshroom?

The same difference applies the other way round: Scarab Green is a little lighter, 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.