Hoped that was it, but it only changes the WINDOWS screens, has no effect on SW windows.
Copy/paste from the link: With that option on, most apps will show a full-color title bar when they are the active program. Some apps get to override this and show their own color (like the Mail app uses whatever color picked in its own settings).
So, not sure how to do it in Solidworks....maybe some sort of registry setting?
Looks like it started in SW 2008.
Copy/paste from this post (from Jim Wilkinson):
There is a general trend in Windows applications to style applications independently from the styling that comes "for free" from Windows. For instance, look at Microsoft Office 2007. The styling of the Office suite no longer uses the windows borders that have traditionally been used previously (for either the main application window or for child document windows).
In SolidWorks 2008, we have also followed this trend, styling the overall application window independently from the operating system settings. This also allowed us to make use of the title bar space which in older style applications is just a title bar with no controls on it (other than minimize/maximize/close). When we went to this new styling, the child document windows looked very out of place inside the SolidWorks window when they were following the OS styling instead of the SolidWorks styling, so we also styled the borders of those windows. Again, this is consistent with what Microsoft is doing in their latest applications.
That being said, it wasn't our intention to make it such that it is harder to tell the active window appart from the inactive ones so that is something we can look into improving.
OH! Since 2008. No chance this will ever be addressed then. 8>(