Patterned Canvas User Guide
You can see the collection details here.
How do I change the colors of the patterns in the materials?
Arnold Render
In the material editor, select Open network editor:

Select any of the color nodes plugged in to the pattern layer and modify the color:

Octane Render
In the material editor, click 'Node Editor'. (If you don't see it, check the basic tab.)

Select any of the color nodes and modify them:

Redshift Render
In the material editor, click Edit Shader Graph:

Select any of the RS Color Abs nodes plugged into the RS Color Layer and modify them:

                
            
            




