Adobe doesn't display colors, everything is in black and white.

[oscar_pv1]

Since the last update, colors are no longer displayed on the phone's screen; only black and white documents can be read, edited, and worked on. They appear in color in multitasking, and color printouts are in color, but on the screen they are in black and white.

[creative explorer]

@oscar_pv1 chances are the accessibility setting has been accidentally enabled, such as a grayscale mode or a color filter. I strongly recommend checking your phone's display or accessibility settings to see if one of these options has been switched on. Rest assured, this is usually a simple fix, and you'll likely have your vibrant colors back on screen in no time!