The color of the frame and seams are dependent on each other and can be easily changed via instance CoronaColor in the Opacity slot of the Stripes material - ID2.
Upholstery - beige boucle.
UV: available for upholstery;
Materials: CoronaPhysicalMTL;
Corona Render not lower than version 8;
Turbosmooth modifier 2 iteration is used;
The archive includes 3D Max 2021 files; FBX 2012 with a separate MAT material file - loaded via the material editor;