Texture Matching?

[Gamergull]

I'm going to make an overpass object for my new city-based enduro. The problem: How can I make sure that the size, color, and texture of the object will match the size, color, and texture of the connecting road texture in my world? I want to keep the ambient lighting in Dillo at 60 (it takes place at night; how unusual ), and I don't want to go though the process of trial and error.

I'll try to get an example screenie up soon, to show what I mean.

This topic can be deleted. I fixed the problem myself. I forgot about changing the sun color.