The color of the upholstery can be easily changed through the CoronaColor instance in the Opacity slot
UV: available for upholstery;
Materials: CoronaPhysicalMTL;
Corona Render version 8 or higher;
The Turbosmooth modifier is used 2 iteration;
The archive includes 3D Max 2021; FBX 2012 files with temporary standard materials, which must be assigned a MAT (in the archive) containing CoronaPhysicalMtl models - uploaded via the materials editor;