I am creating several objects and I want each of them to have different colors based on a color spectrum. To do so in the Shading tab I select all the objects and assign them a material. I then connect the Principled BSDF node with ColorRamp. Since I am using ProRender I do not have the Object Info input. Therefore I have using the RPR Lookup with Random Color selected. I then connect RPR Lookup to ColorRamp. In ColorRamp I selected three colors, Red, Cyan, and Blue. However, on the objects instead of showing any of these colors on each of the objects it only shows white.
What did I do wrong?