Choosing a color scheme for 3 layers of material UI cards [migrated]

I'm working on the Android UI at work, and I'm happy with the current color conventions we've used; white cards on a grey background, and a black FAB adding just the right contrast to separate the two divisions.

However, I am struggling with the following:

  1. In the first screenshot, white cards inside a primary white card do not fit. I tried a darker grey as the primary background color, a lighter grey as the right-card and white cards for the list of cards inside. This doesn't look great though. Any advice on a color scheme for this would be really helpful!
  2. In the second screenshot, the white button inside the white background doesn't fit either. A similar situation here; a white elevated button inside a white card is not recommended, but any other color here doesn't look great.

Has anyone else worked on such a 3 layer color scheme?

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