Enhancement: Color palette for map icons

[peterb12]

Just a thought of something that might add some visual interest: right now the icons in the notes are all the same color as that theme's walls. Might be interesting to allow the user to select the same colors used for "Number" type notes in addition to the wall color.

Certainly not an urgent need, just a thought.

[johnnovak]

Might experiment with this at some point, seems like a worthwhile addition.