Comment 4 for bug 1019843

Since GtkHSV is deprecated, I'm afraid I don't want to use it.

Anyway, I'm making some progress on this. I think the way this is going to work is that there will be a "default" color that you can change. For the next version, that might be the only thing that you can control.

In a future version, I can work on having notes be categorized, and each category can have its own background color. That will be dealt with in lp:1027544