Simplify adding custom stylesheets
Many apps add stylesheets to finish implementing some of their widgets, but they have to track stylesheet (theme and/or variant) changes manually. Because of that, many apps don't handle HC gracefully.
What about offering some component simplifying that by at least checking variant changes? Apps could set light, dark, hc and hc-dark stylesheets, and the component would unload irrelevants stylesheets and load the relevant one instead. HC support could be encouraged by e.g. having a single function to set stylesheets for the 4 variants, each as a param.