Thanks for all the feedback!
@jack07 I added an environment texture ( Glade01.exr from the blender cloud). The Background strength was set to 0.1 though.
I played with the light colors, set the background strength to 1, and this is the result:

Sadly I’ m strapped for time, and off to work ( modelling a drone in Blender, yay!). So I need the time I have left to prepare for next lesson VS fixing this one, I’ d rather skip a little fixing than be a week late on everything.