and...
Jonny and Will wear CARHARTT pants.
"Aviation Pant"
On the German Online Shop you can order them, but the colours (red and blue) the boys wear, sadly not. I think the Designer of Coldplay, coloured them additional. Maybe the brighter ones. You can see this on the fissure. They haven´t the colour of the pant. Was this usefull?
http://shop.carhartt-wip.com/de/men/pants/cargo/I009578/aviation-pant