Challange: Try to make a gray I can't solve

Challange: Try to make a gray I can't solve
Fluffy

Who solved: 23

Who tried, but not solved: 1

All challenges of Fluffy

Burger
Fluffy
Orang
Fluffy
Close
Cadmium Yellow Light
Cadmium Red Light
Ultramarine Blue
Titanium White
Carbon Black