Cycles mtl: set viewport color as mtl color

[Vinc3r]

• [ ] diffuse node color to viewport color
• [ ] principled node color to viewport color
• [ ] gltf node color to viewport color
• [ ] allow to set random viewport color mtl

[Vinc3r]

import bpy
import random

def returnRandColor():
    return random.randrange(0, 1000000) / 1000000

for mat in bpy.data.materials:
    mat.diffuse_color = (returnRandColor(), returnRandColor(), returnRandColor(), 1)