Heavy Metal vs Thrash Metal

How close are they?

ΔE 7.2, close: similar, with a visible difference side by side. Thrash Metal is a little lighter, more saturated than Heavy Metal.

Can I use Thrash Metal instead of Heavy Metal?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Thrash Metal is a little lighter, more saturated than Heavy Metal.

Can I use Heavy Metal instead of Thrash Metal?

The same difference applies the other way round: Heavy Metal is a little darker, more muted.

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.