Material : BlendMaterial,Matte
Texture : Noise
Utilities : falloff(FacingRatio),range,flakes,ColorJitter(rand texture,color),RoundCorners(All objects in Archicad are with hard edges),ramp(gradient) ...
other : scatter(like xgen,mash)
Material Editor maybe !(instance maps would help even more)
I know there is a lot.Generally anything that could be added would help!
(The problem with colorSelector there is only in Rendering setting)
Be strong!
Vasilis
translation-> sponsorship Google