Rated 4 out of 5 stars
which makes it nearly unreadable because it mixes with the text behind the popup window. Should be an easy fix. Possibly add an option in the options to set a specific background color?
I was able to fix this by extracting the xpi and modifying the js code by removing the transparency line setting in the css. Unfortunately firefox 55.03x64 eventually complained saying that the extension couldn't be verified. Seems like that line was the problem though, must be setting the transparency always to 100%. (was only a problem for the background... I could change the foreground text color in the options without issue)
Can you please share device name and operating system name you are using and a screenshot of the transparent background? We gave it as a white background with black text.