Rated 5 out of 5 stars

Από τον/την custom.firefox.lady στις Μάρτιος 16, 2021 · μόνιμος σύνδεσμος

Thanks, works fine. The inbuilt keyboard shortcut also works, but I like having a button. Agree that a monochrome or even grayscale icon would look less glaring. I used userChrome.css to sub the inbuilt 'Get Messages' icon:

#gamb_pharqcon_com-browserAction-toolbarbutton {
--webextension-toolbar-image-2x: url("chrome://messenger/skin/icons/getmsg.svg") !important;
list-style-image: url("chrome://messenger/skin/icons/getmsg.svg") !important;
}

Exact css depends on system; YMMV