How to stop or change red StandBy mode?

IHadaName wrote:

Red! What is the point of choosing a colour? Can the red be changed?

Your eyes have special cells that tell your brain whether it’s day or night.

These cells react very strongly to blue light, but hardly at all to red light.

When blue or white light hits your eyes at night, those cells send a message to your brain saying:

👉 “It’s daytime—stay awake.”

That shuts down the sleep hormone melatonin.

Red light doesn’t trigger those cells much, so your brain still thinks it’s night.

Melatonin keeps flowing, and you stay sleepy.

So red light is preferred at night because it doesn’t confuse your brain into thinking it’s daytime.

Think of it this way:

Blue light = alarm clock ⏰

Red light = night-light 🌙

Technical answer:

Technically speaking, it comes down to spectral sensitivity of the human circadian system.

The human circadian clock is regulated by intrinsically photosensitive retinal ganglion cells (ipRGCs) in the eye. These cells contain melanopsin, a photopigment with a peak sensitivity around 480 nm (blue-cyan light).

Here’s the key part:

• Blue/short-wavelength light (≈450–500 nm) strongly activates melanopsin
• This activation suppresses melatonin secretion from the pineal gland
• Melatonin suppression shifts the circadian phase and increases alertness

Red light (≥620 nm) lies well outside melanopsin’s peak sensitivity range, so:

• ipRGC activation is minimal
• Melatonin suppression is negligible
• Circadian phase remains largely unaffected

Additionally, from a retinal optics perspective:

• Longer wavelengths (red light) scatter less in the ocular media (Rayleigh scattering ∝ 1/λ⁴)
• This reduces retinal light spread and minimizes neural stimulation at low luminance

In technical terms:

Red light has low circadian efficacy due to weak melanopsin stimulation, making it physiologically preferable for nighttime illumination when sleep preservation is required.

That’s the lab-grade answer—no vibes, just wavelengths and neurons 🧠📡

IHadaName wrote:

Thank you for the response.

…. I

… it is like that glass transparency nonsense … no off button … and eventually a shading option which is simply not adequate. I am struggling to use the device because either

...

Either

Settings, Display & Brightness , Liquid glass, set to Tinted instead of Glassy

Or one or more of these

Settings, Accessibility, Display & Text size, reduce transparency

Settings, Accessibility, Display & Text size , increase contrast

Settings, Accessibility, Display & Text size , Display Borders

Settings, Accessibility, Motion, Reduce motion