I was displeased with any of the (yet so many) libraries for generating colored console output, so I wrote my own: hansi.

Features:

• 8 color, 16 color, 88 color, 256 color and 24 bit (True Color) mode
• converts colors between modes
• proper color nesting (this is broken in highline, which is what I'm using in most of my projects right now)
• automatically detect proper mode for current terminal
• does not come with a Ruby DSL
• supports string templates (optional)
• supports themes (optional)
• zero dependencies
• full test coverage
• no monkey patches