[Bug] Sidebutton text set to color: inherit

Hi and thanks for this plugin, which generally works well for me.

I noted a possible bug while setting up my pop-up. In the plugin menu under the site button tab, I changed the text color to #ffffff, but the button text remained black after that. I checked the css/html of the plugin on my page and noted that

a:not([href]):not([tabindex])

was set to

color: inherit;

I used the custom CSS tab to override the attribute and it worked, but I thought you should now that something may be broken.

Lastly, I would also have a small feature request:

It would be great if you could add a hover color option to the side button menu.

Regards