public/css/theme-mine.css
themes/hugo-theme-learn/static/css/theme-green.css

public/css/theme-mine.css
themes/hugo-theme-learn/static/css/theme-blue.css

public/css/theme-mine.css
themes/hugo-theme-learn/static/css/theme-red.css

public/css/theme-mine.css
themes/hugo-theme-learn/static/css/hugo-theme.css