Comment 6 for bug 1645762

> A) logos to svg (best case)
Some logos are already in svg and have the grey pixels

> B) remove the circle of white pixels from the images (see gimp's remove background) and replace with a white circle.
Yes, it's a workaround which will work, not a bad idea if I'm on my laptop.
Personally, I redo the conversion from my desktop computer and It worked