The MagSafe 3 cable is an amazing piece of engineering, showing charged as green and charging as amber. Please consider that "carging," being amber and "full" or "reached charging limit," is green, but for a high end company, you need to make the MagSafe wire more useful. A software MagSafe update, like macOS 26.5 was very noticeable for me, as i have the charging limit set on 80%. A new MagSafe 4 would be a simple MagSafe 3 update, creating MagSafe 4, introducing a yellow colour, to mimic macOS window controls. It is very simple, as both red and green diodes are already in MagSafe 3, light physics tells us that red+green=yellow. All we have to do is turn on both of those LED diodes, and we have yellow. MagSafe 4 should have the following: Amber:0%-50% Yellow:50%-90% Green: 90% + or reached charging limit Pulsing Amber: overheating or critical issue with power cut off Pulsing yellow: slow charger, under 30w for macbook air and under 70w for macbook pro. This should be very simple as its a few lines of code.