#2782 osm2city mesh buildings and random buildings have different brightness

[Rick Gruber-Riemer]

Attached screenshot shows ranom buildings in BUILDING_LIST mixed with buildings in meshes (OBJECT_BUILDING_MESH_ROUGH). There is a distinct difference in how they appear: the buildings in list appear quite dark no matter the sun, whereas the buildings in meshes are much brighter.

The brightness/shineiness etc. of both should be rougly the same.

In ac3d-meshes the material is:
MATERIAL "facade" rgb 1.000 1.000 1.000 amb 1.000 1.000 1.000 emis 0 0 0 spec 0.0 0.0 0.0 shi 0 trans 0

I am not saying that the brightness in osm2city is more correct.
=> Please advice the maintainer of osm2city (me) if the material in ac3d should be changed - or make a change in either the building shader or random buildings shader to align.