In the bottle there is a strong blue and purple duo chrome going on. On my nails it looked mainly chocolate brown with silver shimmer. In some lights it looked exactly like MAC blue brown pigment.
The cool thing is that it turned a really pretty purple shimmer in direct light.
in direct light, fuchsia purple shimmers:
Formidable can be duped with Orly Galaxy girl. Out of all 3 Venomous Villains polishes this one applied the nicest. Color is shown with 2 coats.
You can see my NOTD's wearing MAC mean and green and bad fairy here.