How to revert my iPhone display back to normal, from negative colours?

I changed my display when my iPhone was plugged into my computer. I was changing the iTunes display to "White on black background" but it's made the phone display everything as negative coloured images and I want to restore it back to normal.
Can anyone please help me, as I don't want to restore to factory settings.

Put in the microwave for about 2-3 minutes.

Settings-general-assesablity-invert colors

Press the home button three times fast

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