Enhancement: Allow "Rename" section of each Node to have its own font properties

[Xeno-Idaltu]

In the "rename" section, we can't have each node have their own font color and style. This is a handy feature to have since we can use Bold/Colorized Font Styles to make things more eye candy.

[tsujan]

I'm afraid making each node have its separate font doesn't seem relevant to note taking.

Of course a notes manager may do various things — it can even have different fonts for different paragraphs — but I include only those things that are really pertinent to notes taking. Particularly, I try to avoid cluttering the app or its code unnecessarily.