Thank you to Mads Ohm Larsen for contributing the first PR to my new festive_errors Ruby gem!

Each of the first five holiday stylesheets now have festive AA compliant accessible color schemes.

A Ruby on Rails error page with a Halloween theme, showing a RuntimeError in HomeController#index. The page displays Ruby code with a line highlighted in orange-red that raises an error with the text 'Happy #{holiday}!'. The error occurs in a method that appears to be setting a holiday theme. The page has a brown/orange color scheme instead of the usual Rails error page colors, and includes a ghost emoji (👻) in the header. Below the code snippet are collapsible sections for 'Toggle session dump' and 'Toggle env dump', and sections showing the application trace and request/response information.