Edit Color of Open Workflow Tabs

[hellyars]

1.  I would like the tab color/contrast of the active tab to be more prominent / discernible.  It does not really stand out. 

2.  I would like the ability to set default colors for different open workflow types -- standard workflow, macro, analytical app, so I can use color to quickly distinguish between tab dependencies or simply what is what.

3.  I would like the ability to change the color of any tab at any time (similar to Tableau Desktop, but with greater color choice).