Icon background color breaks readability

When app icons have transparency, Bliss picks a color somewhere in the icon and generates a background with it. In some cases this can make the icons unreadable. Here are some examples, comparing Bliss against the Fairphone 2 Launcher (these apps were installed from the built-in /e/ app store):

Bliss:	Fairphone 2 Launcher:

Look at TopTop particularly.

I personally don't use these apps, however, a much more common one for all /e/ users would be a shortcut to the /e/ forum:

Bliss:	Fairphone 2 Launcher:

In any case, I think this approach for icon background is risky. If you really want to keep those squares with rounded corners, I would suggest making them a semi-transparent black and optionally give the ability to change it to another color in the settings in order for it to be visible on any wallpaper. Otherwise, you could do like the Fairphone 2 launcher does in this situation and just put the icons as they are.