I have an object with some color from an existing .blend file. Where can the color be changed for this object?
I just found out how with the present configuration (it looks like there was also a texture that had been applied):
Select the object. Press Object button in properties. ("Type of active data to display and edit: Object") In that same pane, scroll down to and maximize Display. Current RGB is under Object Color:.
This can be done in either Object Mode or Edit Mode.