text: Title: Better, easier, and integrated support for color bars
  Body: Add better support for easier and integrated color bars!
  
  Usually this is achieved with `layout.coloraxis.colorbar` but I'm not sure how easy it is for users to manually integrate this with our ridgeplots. At least add an example to the docs? [(REF1)](https://plotly.com/python/colorscales/#hiding-or-customizing-the-plotly-express-color-bar) 
  
  Refs:
  - https://plotly.com/python/colorscales/#customizing-tick-text-on-discrete-color-bars
  - https://plotly.com/python/colorscales/#using-label-aliases-on-colorbars
  - https://plotly.com/python/colorscales/#positioning-colorbars