Chris Martin has said its lyrics were about the mood of the band – brightness and hope – but he's also admitted that he used the actual word yellow simply because it scanned.
It's a trick he repeats with a little more brightness on the single Retrograde, whose backing is like some cyberpunk version of Ray Ellis's orchestral arrangements for Holiday.
The free app is so well integrated it looks like it should be baked into Android Wear; it even allows you to quickly adjust the screen brightness with a small slider.
If you're taking to the country lanes, then the key thing is brightness.
But used as an accent, a burst of brightness, this spring's yellow is lovely.
But this brightness boom has brought trouble.
Edge-lit displays have problems with uniformity of brightness, as well as a limited viewing angle.
Experiment suggested 100 volts produced an acceptable trade off between brightness, reliability and safety.
It notes things like the brightness and colours of individual pixels, and how those properties are distributed across the image.
In any case, both will use the same new technique multiple spacecraft looking at stars from slightly different angles.At the moment, the obstacle to photographing exoplanets is not the dimness of the planet, but the brightness of the accompanying star, which drowns the planet's light.
Invariably, most will have their brightness and contrast cranked up for maximum impact.
