Chosen Solution
It used to be a small spot in the top left corner I had a green and blue patch at the corner of my phone screen. The colour only shows when the screen is on (the brighter the screen the more visible the colour) and the abnormale colouring did not show up in any screenshots. It looks like water so I put it in rice for a few days. When I took it out it had only gotten worst. The colour has now seeped across the screen and limits visibility. What should I do?
@angelblais without actually seeing your screen and only going by your description, it sounds like a broken LCD. You most likely will have to replace it. Here is the guide for that. Of course, to verify this you can post some images of what your screen looks like with your original question. For that use this guide
You may have dropped it recently and it didn’t break on the outside bit leaked on the inside