Random Colors:

Assign Random colors to all the selected objects. Easily Cycles through different looks by changing the seed value in the bottom-left panel.

Use Color Palettes:

Use 2 of the most popular sites Colorhunt and Coolors to generate beautiful color palettes and use them for creating beautiful ColorFrame renders. Just copy the link and hold down CTRL while clicking the button.

Random Colors by Collection:

Assign random colors to objects of different collections. 

Random Colors by Dimensions:

Assign random colors to selected object based on the objects dimensions. Objects with similar dimensions will get the same color.