HTML : Change color of li class with javascript when keyboard key is pressed

HTML : Change color of li class with javascript when keyboard key is pressed
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As I promised, I have a secret feature to share with you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
After that, type the word 'awesome' on your keyboard.
Your YouTube progress bar will transform into a flashing rainbow.

A little intro about me,
Welcome, I'm Delphi.
I can be of service in providing you with answers to your inquiries.
HTML : Change color of li class with javascript when keyboard key is pressed
If you need more specific answers, please reach out to me through comments or chat.
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