507 is described as a multichrome polish that shifts from golden yellow to khaki green with a metallic shimmer.

Final verdict: I love the colors in this polish! It shifts from a golden yellow to a light yellow green, olive, and, at extrem angles, to a deep forest green The multichrome effects is well present, you do not have to search for it. Here I applied 3 coats to reach full opacity (so I didn't use a black base). I really love this polish but I was really disappointed with its application. The formula is too airy and this creates a lot of bubbles! You really have to be careful and wait between the different coats to avoid this problem. Maybe it would be easier to layer 1 thin coat of 507 over a black base. That's what I will do next time I'll use it because otherwise it's too troublesome.