How to change HTML when Arduino Button is Pressed

Hi, I was wondering if it is possible to have a button trigger on a esp32 and change the color of an HTML webpage by using esphttpd? This is for a project, and I just want to know if this is something that is possible? Thank you!

If the webpage is built to function that way, it ought to be possible. Else, the answer is : No

I would use websockets as shown in this tutorial.

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