Colors/materials not showing after import from dwg to skp

Hey there, I have a model of a house dvg format and when importing to sketchup the colors/materials are not imported properly. Could someone help please? I have uploaded the file here.
21924-AR-R9.dwg (12.1 MB)

I get colored faces when I import the file. Look for the Options button in the Import panel and make sure the box for Materials is checked.

TO verify that this is not Mac-specific, here is what I get - clearly the same as @DaveR showed:

As to textures, the built-in render engine in AutoCad is an extension that stores the information in a proprietary way in the file’s Xdata so that it is not readable by other applications. Perhaps exporting the model to some other 3D format from AutoCad might contain textures.

Hey Anssi, actually the architects are exporting from Revit program into dvg file and then I’m importing to Sketchup. I see same colors as the others, however the outside of the house has nothing to do with the materials/colors that we have decided.