Render Color Preview (or, why is it grey on blue?)
I am only seeing renders as grey solids - my 19-object (1424 poly) is in 4 colors. I have seen preview renders of other projects in color. Perhaps I hit a setting or option and I don't know where to undo that. And, now that I have touched some more preferences, the mini-preview portal at the top-left is also showing grey-on-blue background.