As of SolidWorks 2016 Beta 3, there are 3 brightness levels for 2016.  Found under Tools>Options>Color, Interface Brightness.  Having tested this out on my projector, I will be implementing the Medium(Experimental) theme for my classroom and all the training computers.  This provides decent contrast and I am starting to really like it.  Therefore I will be showing the students how to change this setting vs. there work computer, as the default out of the box is light.  I usually change a few settings for clarity, see this link​.  Any thoughts on this?  What will you be using and why?