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There is absolutely nothing that you can do about that on a front-lit device. On a backlit LED device, you can filter the colour of the light that shines through the screen by adjusting the colour of the pixels. On a front lit device, where light is shone from above onto a greyscale screen, there is (self-evidently) nothing that you can do on the screen that will change the colour of the light (other than applying some sort of coloured filter to the screen's surface).
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