That and the improved Greens suggests that Samsung now use both red and green phosphorescent OLED, which was predicted to give a 25% energy saving.

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Room color schemes run from beige and cream to soft greens, delicate blues and a sumptuous red combined with olive in the corner Mont Blanc Suite (the eponymous mountain can be seen from one of the suite's two balconies on a clear day).

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The red flash of the brightly painted train is absolutely unmissable among the gentle greens, greys and blues of the mountains.

BBC: Full steam ahead

Bright red and neon yellow interiors will be replaced with muted oranges, yellows and subtle greens.

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