git submodule add https://github.com/zwbetz-gh/cayman-hugo-theme.git themes/cayman-hugo-theme
git submodule add https://github.com/budparr/gohugo-theme-ananke.git themes/ananke
git submodule add https://github.com/vjeantet/hugo-theme-casper.git themes/casper
git submodule update --remote --merge
Copy the config.toml or config.yaml from the exampleSite, then edit as desired.
When editing the header background colors, this site has some nice color combinations.
Upload your image to RealFaviconGenerator then copy-paste the generated favicon files under static.