A specimen on a bench, lit by a single light that follows your cursor. Three Flyshare materials answer it differently: M.01 metal, M.02 light, M.03 gloss.
The universe
Lamp—
Height—
Incidence—
Lobe—
Irradiance—
Specimen M.01
M.01ReflectsFS-04
Metal.
Brushed aluminium, steel, chrome, concrete.
Base#A6A6A6
Roughness0.25
Metalness1.00
Emission—
Roughness is the width of the reflection.
The same object. Three answers.

Flyshare Material // Specimen bench

There is one light in this room and it is your cursor. A material is not a colour — it is what it does with that light.

FS-04 // Material 000
Measuring the specimen