Having just done some testing of my app on iOS with the accessibility option "Invert colors" enabled, I am pleasantly surprised at how little needs changing within my app to cope with Invert Colors being used..
There are literally two places that need tweaking:
(1) images that I load and display, which are now appearing as negatives
(2) my color specification page, where my red, green and blue sliders are not red, green and blue, and where other named colors are not displayed as those named colors.
Does anybody know:
(a) how to identify whether "Invert colors" is enabled?
(b) how to disable the effect of "Invert colors" on specific controls?