Regarding coloring, I created a simple Ruby editor with syntax highlighting that features... - Indentation based coloring of whitespace - Nesting-based colori

Regarding coloring, I created a simple Ruby editor with syntax highlighting that features... - Indentation based coloring of whitespace - Nesting-based coloring of parentheses You can try it out here: https://broxp.github.io/ruby-ide https://broxp.github.io/ruby-ide Of course, these ideas are not new. There are plugins for IDEs for some languages, one that I recall is the F# depth colorizer: https://cyanbyfuchsia.wordpress.com/2013/11/18/cool-visual-studio-extensions-for-f-developer/ https://cyanbyfuchsia.wordpress.com/2013/11/18/cool-visual-s... And there is parentheses highlighting in Eclipse (when touched by the cursor).