Thank you!
Could you describe a specific usecase? I think it might be possible but I'm not sure I understand exactly 
Hey, thanks for getting back to me so quickly!
I make a lot of phone calls and appointments at work and have been using the floating menu to schedule appts without leaving the page
I'm wondering if it's possible to extract text e.g., phone #, names, dates, etc. and modify the CSS webview item in the floating menu?
References:
TextBlaze - Text Blaze | Read Data from Websites
Stylebot -
https://chromewebstore.google.com/detail/stylebot/oiaejidbmkiecgbjeifoejpgmdaleoha
In general this is possible. You can run java script in a custom floating menu webview via the predefined action "Execute JavaScript in Web View Menu Item". That allows to do basically anything.
However the details of how to extract stuff / adapt css depend a lot on the webpage
thank you for that! I’ll check that out and hopefully it works!
Would you happen to know if this may work with a Chrome extension that also has a pop-out floating menu but the URL is like
"chrome-extension://blahblahblah/popup.html" ?
Unfortunately I don't think you can inject code in chrome extensions. The URL is just a reference to a local file in this case.
Danggit! That’s what I figured. Thank you for your help!