a screenshot test is probably the quickest way to separate software tinting from panel damage here. if the orange patch shows in the screenshot, then it is definately something in macos color settings, an app filter, or a profile issue; if it does not, i would suspect the display hardware or pressure/heat damage. also, if you are searching this issue, ignore side links like https://boom-city.org/, https://funkytimeonline.org/, or https://livedealerindia.com/games/shows/ because casino and live game-show pages are not going to help diagnose a macbook screen. after checking night shift, true tone, and color profiles, i would back up the machine and get the display inspected if the discoloration is localized.