Elemental Bolt vs Scaly Highlight

How close are they?

ΔE 6.6, close: similar, with a visible difference side by side. Scaly Highlight is a little darker than Elemental Bolt.

Can I use Scaly Highlight instead of Elemental Bolt?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Scaly Highlight is a little darker than Elemental Bolt.

Can I use Elemental Bolt instead of Scaly Highlight?

The same difference applies the other way round: Elemental Bolt is a little lighter.

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.