Imported Object - Can't Change Color

I’ve tried “Object Properties > Display Color” and I’ve fiddle with material and tried to change the material and its color. None are getting me what I want to see. You can see in the screen shot that the color is green and I attempted to make the object color red. The layer color is set to black. Is there some other property that might be overriding these settings?

The object is a block instance. The colors come from the layers the original objects that made up the block were on - or the original object colors if they were applied individually. You can change the layers/colors via BlockEdit.

Or, just explode the block to get “real” geometry, then apply colors or layers as necessary.

That worked, thank you!