itunes mac osx el capitan blue and pink icons
Since some recent update, the default icon for artists iTunes does not recognize (the vast majority in my personal collection) is a microphone with a blue and pink background. I can't find where to change this. It is so hideous, it is aesthetic assault. Is there a way I can cast it to black & white, or override the default with album art, or something?
iMac, Mac OS X (10.7)