Caption color:
Marker color:
Caption size:
You can do anything, but not everything.

Restricted Mode:    ON    OFF
Activate 'Restricted Mode' to block any inappropriate content to be displayed (aka Kid Mode).
Video Quality:   
The lower the quality - the lower your network bandwidth consumption & the faster the loading time.
Select 'default' to allow YouTube to selects the appropriate playback quality (recommended).
Keyboard Shortcuts:
Action Shortcut
Next Track Ctrl + RIGHT ARROW
Previous Track Ctrl + LEFT ARROW
Replay Ctrl + ENTER
Go Forward 5 sec Ctrl + Shift + RIGHT ARROW
Go Backward 5 sec Ctrl + Shift + LEFT ARROW