Themes are a common pattern with toasts, and the intention is to build some themes into the std-toast. A non-exhaustive list of current ideas for themes:

• Default (Info)
• Success
• Warning
• Error

Is there strong feeling that this doesn't cover it? Do people feel a distinction between Default and Info? Additionally, while these will be built to be styled, is there strong opinion that there should be a way to add new themes beyond existing support for styling?