curiously enough, if I display this logo inside the firefox browser it is invisible (just a red square).
However, donwloading the png file and opening it on any image viewer it shows two different shades of red. I guess firefox is applying a silly color contrast change to its images before displaying them.
Just to add my own observations (Ubuntu Disco, FF 66) - it's also solid red for me in Firefox, but if I download it I can see the Android image in the preview in Gnome's file browser. If I open it up in Ubuntu / Gnome's "Image Viewer" application it's solid red, but works fine in Shotwell.
It's also solid red in GIMP 2.10, which surprised me.
However, donwloading the png file and opening it on any image viewer it shows two different shades of red. I guess firefox is applying a silly color contrast change to its images before displaying them.