ΔE 8.5, close: similar, with a visible difference side by side. Gloss Aluminum is a little lighter than Stormhost Silver.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Gloss Aluminum is a little lighter than Stormhost Silver.
The same difference applies the other way round: Stormhost Silver 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.
See Stormhost Silver on the colour wheel See Gloss Aluminum on the colour wheel
All matches: Stormhost Silver equivalents · Gloss Aluminum equivalents