i see.... its probably an issue with color/gamma profile. In photoshop, try assigning a color profile to your image. Under EDIT>Assign Profile. The most common one is sRGB IEC61966-2.1
i pressed x button for the shortcut to the right of it and now this action disappeared. I can't find it in keymap search menu and also can't just assign new shortcut with rmb -> assign shortcut. How can i return it now?