Hi!
I think I've found a pair of bugs.
The first one is about line numbers coloring.
When you select a default background color for all elements (let's say blue), and then you select the exact same color for line numbers, a default gray will be shown as line numbers background instead of the selected background color for line numbers(blue).
The other bug, or lack of feature, is the possibility to change the identation guides background and foreground colors (or perhaps I'm to lazy to understand how to change it). Can you help me?
Anyway, congratulations for a great code editor!!