Is there a starter template that can inherit the stylings defined in the Official Starter Project Style Guide?

The community member is looking for a prebuilt starter template or demo page that inherits the styles defined in the "Style Guide" that ships with the Official Starter Project. They want to visualize how the configurations render when applied, in order to fine-tune the styles. The community member is aware of the Style Guide Builder (beta) but is specifically looking for a demo template. One community member has been working on a similar idea but is unsure if their work will be replaced by the upcoming Style Guide Builder. Another community member has not seen anything like what the original poster is looking for.