I am the guy in charge of CAD Management at a small firm that is just over 2 years old. I just made the change from CTB to STB (object based) plot styles. The styles are created. Annotation set. Tables are no longer a bunch of lines with text involved.
So what do I do with all of these colors?
Do I make the colors specify disciplines? Parts? Updates?
What is it that you do?
This will sound like a smarta$$ answer, but it I promise it is not.
Just use colors to represent colors. Nothing more, nothing less. If you're drawings are all plotted monochrome, set the colors to whatever is comfortable for your eyes, or whatever approach you wish. You mentioned disciplines, parts, etc....I would say yes, absolutely.
We use a simple BLK/COL group of styles in an STB file. Two dozen styles provides virtually any desired output, without any need for a reference chart, etc. I see users that work from several different perspectives, some very picky about their layer colors on screen. They can can use whatever they like, it doesn't effect the final output (except for when using COL styles, of course.
Hope that helps.