vim assets/colors/_presets.scss
compile scss (see below)
npm install -g sass
cd AllesAusserScrumWebsite
sass assets/scss/main.scss assets/css/main.css
npm install -g sass
cd AllesAusserScrumWebsite
# to compile
sass assets/scss/main.scss assets/css/main.css
# to watch
sass --watch assets/scss/main.scss assets/css/main.css