Please refer Faq's page in documentation itself for queries and customization like Colors, RTL, Dark style..etc.
If you don't want delete Switcher please follow below procedure to remove switcher styles.
Step-1: Remove switcher.html
HTML page.
Step-2: Remove the below Switcher related HTML, CSS, TS & Switcher Icon in empty.html
HTML page.
Step-3: Remove the Swicher Folder in assets.
Rootpath: (../assets/switcher)