Michael,

Thank you very much for your answers.. I start to feel a bit worried that I'm taking too much time off your work
Gonna try beta very soon though..

The only little point is the ms ribbon is very arguable interface for reference (some people refer to it as fundamentally wrong) and many people on ms & autodesk forums feel very sad about it... others don't upgrade at all.. (unlike 3ds people- who are relatively happy)

Here we have sort of a ribbon type as well but.. absolutely different in implementation - times and times better than that of MS and I really liked your point that core tools' icons mustn't move around (in some previous post).

From psychological part of the color theory - orange (yellow) and light blue & are opposite in their impact as a highlight. That's why white seems to be a highlighted state - not the light blue..

Love to hear you have instances here too..! need to check help on those (as they are what makes SketchUp so powerful..!!)

Regards
I