Update popup colors. Add local color extraction behind a flag.

- Also updating folder backgrounds, lStar only works in ColorStateList.

Bug: 191496301
Test: test wallpaper with light text, in light mode
      test again in dark mode
      test wallpaper with dark text, in light mode
      test again in dark mode

Change-Id: I2d43d874e7e2fad6a9a0e039058beb58b204fa96