Toggle light / dark theme

https://www.youtube.com/watch?v=47zsQw5bqEw&t=1s

https://www.youtube.com/watch?v=vV1q4SrcCg8

https://www.youtube.com/watch?v=YSC3AbeeEik&t=1s

https://www.youtube.com/watch?v=Mks2uGxzYLs&t=1s

https://www.youtube.com/watch?v=aDCKIhWTe1Y

https://www.youtube.com/watch?v=uBzLIyDBveM

https://www.youtube.com/watch?v=JkdXltBycMc&t=1s

https://www.youtube.com/watch?v=HDiP2k8IaRM

https://www.youtube.com/watch?v=EEZpppBFj5Q&t=1s

https://www.youtube.com/watch?v=fhx1tf9VGiY&t=1s