filled regions

[..shaner]

is there a way to do a filled region of solid white in a semi transparent so i can give depth to building sections and elevations?

[aaronrumple]

is there a way to do a filled region of solid white in a semi transparent so i can give depth to building sections and elevations?
No.

The only "trick" I've used is a small dot patter in white on type of the black lines. It will give a kind of halftone effect, but isn't real refined.