In the docs, it looks like you are suggesting including stylesheets specific to the style guide like syntax highlighting and docs styles in application.scss. I think it would be better to isolate those styles and only include them in the layout if the current page is the style guide itself:
# application.scss
@import 'hologram_rails/github';
@import 'hologram_rails/docs';
On my project, we have:
# styleguide.scss
@import 'hologram_rails/github';
@import 'hologram_rails/docs';
And we conditionally include it if the current page is the style guide. What do you think?