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:
