Please refer Faq's page in documentation itself for queries like customization like color ,rtl ,dark style..etc.
Below SWITCHER code is also available in switcher component page
"Below links shows how the switcher pages looks like & path of the Switcher pages in the template."
https://ibb.co/C0cBTJs (Path:pages/Switcher/Switcher-1)
If You want to add switcher icon to any page just replace below code in place of main-header section
main-header