Our Construction plans are black and white. We do print presentations in color including color aerials, shading and renderings.
For simple color shading of plans for phasing or stormwater areas, I just use Autocad. Fancier shading with patterns & "materials" for planning or council meetings we have someone that dresses up the plans in Adobe Photoshop. For full renderings, we have a division that uses various software Viz, 3d Studio, Photoshop to produce presentations.