Color Schemes are used to set color platelet components in the model. A color scheme can be applied to an entire mode or to specific components.
To apply a color scheme, select the model.
Go to Format → Color Scheme.
Select the color scheme you want to apply. You can select Apply to the existing components otherwise it is applied to the canvas and all the newly added components.
You can set a color scheme as default by going to File → Preference.