Out of the blue...

This is more of a question than a blip. Why did the greenish foliage of this plant come out blue? The yellow flowers are the colour they appear in nature. I haven't done anything to the shot apart from download it to the computer. The camera was set on auto, I think, which is where it usually is for somebody who knows as little as I do about this stuff.

Anyway, I liked the contrast, so here it is.

This was blipped yesterday, but got lost somewhere along the way!

Weird....