For personal red illumination I use USB-rechargeable NightRider rear bike lights. I ultimately got two and I take them everywhere with me. They are great night lights, especially when travelling, except for the fact they flash blue when you turn them off to indicate their charge level! Using bike lights makes sense as they are designed to be durable, waterproof, and long lived.
I've used a series of OLED screened phones. Rooting can help to ensure you really can put a full screen temperature adjustment on the phone. I regret not having done this on my current phone, which is a oneplus model.
In the past year or two a huge number of multicolor LED lighting solutions [1] have shown up on amazon. These are usually cheap strips of several hundred multicolor LEDs, and come with an IR remote that lets you set one of a number of colors--- among which are pure rend and oranges that are nice in the evening.
I have looked myself, but there is a jungle out there and I find it difficult to choose products.