Two Tones

In putting together a building, I have come up against a bit of a wall. I’ll make the window sill one colour (Blacksteel), but when I make it and the building one object (ctrl-J), the entire building takes on Blacksteel. I don’t want that. How can I fix this?

~St. Anonymous~

Give the building a material. When you join them they should still retain their individual materials

It worked! Thank you so much!