I actually do indicate note types using color! I distinguish
- literature notes: notes on external sources
- journal notes: notes and reports on events and thoughts linked to a point in time
- insight notes: notes on my own thoughts and my understanding of things.
- concept notes: notes that do not make any assertions about a notion, but provide a definition
Most systems I know have a similar structure, but it remains a matter of personal preference as of what typing is useful for you.
Finally, please have a look at my article on how to use the supernotes feature set consistently.
Great you consider supernotes as you new pkms! If you have any questions, keep posting them here.