I meant to post this comparison ages ago. Better late than never? 🙂
Here are three blue Glitter Gals and one NCLA for the sake of contrast; NCLA Spaced Out is a creme-based scattered holo unlike the linear holo Glitter Gals. Two coats each.
Teal Blue is more teal obviously, and Navy I will Navy I Won’t and Marine Blue are similar to one another.
Marine Blue is just a bit darker than Navy I Will, and the metallic shimmer flash of Navy I Will leans a little bit teal while Marine Blue’s is more of a royal blue (the shimmer and its contrast is most obvious in the photo directly above).
Hope this might be helpful to someone out there!
Disclosure: Glitter Gal Navy I Will, Navy I Won’t was previously provided by the company for review.