Glittering Loot vs Retributor Armour

How close are they?

ΔE 8.4, close: similar, with a visible difference side by side. Retributor Armour is a little lighter than Glittering Loot.

Can I use Retributor Armour instead of Glittering Loot?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Retributor Armour is a little lighter than Glittering Loot.

Can I use Glittering Loot instead of Retributor Armour?

The same difference applies the other way round: Glittering Loot is a little darker.

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.