Sunset on 29th July 2015 - Belfast UK was 9:31PM
Nothing unusual in seeing different coloured contrails. Unlikely to be different engine variants, but simply down to the lighting or the camera not accurately recording colours?
Obviously the "sphere" is just light reflecting off the underside.
His video description claim
No doubt the trolls will scream light refracting but on the whore eyes on [horizon] the clouds are dark grey with no light refracting...
Notice that he doesn't inform viewers of the altitude of the McDonnell Douglas MD-11. The MD-11 was up at 30,000 feet and nowhere near those dark grey clouds.
Image of MD-11F, Serial N574FE
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