So, to get started, you'll need to access your device's display settings. This is usually done by clicking on the settings icon or typing "display settings" into your search bar. From there, you'll want to look for the color temperature or color scheme option, which will allow you to adjust the hue of your screen to your heart's desire.
Now, I know what you're thinking: "But won't making my screen red be distracting or overwhelming?" And to that, I say, not necessarily! With a little experimentation, you can find the perfect shade of red to enhance your overall user experience. Plus, it's a great way to express yourself and add some personality to your device.
Red Light Screen Effect at Elsie Tucker blog