> I disagree with the suggestion that changing the color(s) of the logos and icons hinder the user's ability to find the app.

I actually disagree. There are lots of inputs my brain is using other than the specific logo when I'm quickly moving through my phone looking for a specific app, and this could totally throw me off. Often times I think to save energy my brain looks for a "low-rez" abstraction of what I'm looking for rather than one that is in full detail. That being said, with everyone requiring an app these days my phone is so overloaded I just search for everything.

Granted, I don't thing the original posters concerns have as much to do with accessibility, and if it takes me a little longer to find an app, so be it.