Hello Nicolatis
I'm sorry if my observations have in any way upset you, that was not intended - I know that we are all very grateful for the work of developers like yourself in maintaining and developing flightgear and associated scripts.
My observation about ambient reflecting rgb is not my own, but taken directly from a flightgear wiki page:
[url]wiki.flightgear.org/AC_files:_Basic_changes_to_textures_and_colours[/url]
"...As of FlightGear 2.0, the amb setting should duplicate the rgb one. If you leave it at amb 0.4 0.4 0.4 after exporting it with the SketchUp to AC3D exporter, the surface will be all grey when the sun does not shine directly on it. So in our example, the amb value should be 0.5 0.5 0.5, just like the rgb one..."
Having checked a number of recent models this seems to be what people are submitting, either directly from script or by manually setting ambient values.
My own script has a single line that achieves this:
self.amb = self.rgb
I appreciate that the script you maintain is not exclusively for flightgear, but feel sure that if there were a 'dedicated' flightgear version it would be greatly appreciated. I wish my own python skills were more than 'just sufficient to be dangerous' - I appreciate that there's a lot of work in maintaining these things.
Kind regards
Isi