Create multiple meshes with different colors in Human UI

1.Is this the right way when i need to show many meshes wiih difference colors, I need to set a corresponding quantity manual
2.If i got a urban model with gh, there are tons of buildings , roads , squars, should i just merge them all,and flatten all the date, ignoring which type it is, and put into “mesh to dispaly” of “set 3D view”

U can use “list length” and a Color Wheel:
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