HTC seems to have some Neo-Plasticism art fans under their employment.
In possibly one of the more clever wink-nods in phone-naming history, the "HTC Mondrian" (see story below) seems to take its influence from famous Dutch painter Piet Mondrian, whose work you see above.
If you don't see the visual influence between one of Piet's most famous pieces and a certain 'Metro UI' then we don't know what to tell you. Or just a coincidence?
And if this purported first leaked Windows Phone 7 ROM is a hoax? Our hats off to the folks for going that extra mile in being so witty.
[thanks to MonteCristoffOn for noticing!]