Bizarre...there I was, crouching down on me hunkers, focusing on m'boy's Xbox box-thingy as the last of the afternoon light came in the window and did its best to brighten up the room. So far so good, but when I chimped the shots, they've all got this strong blue cast. I checked the WB, which was set to Auto so nothing amiss there...but then I reckoned that the pale light must be registering as 'cold' to the camera, hence the blueness...is that a correct assumption?

Anyhoo, this is totally natural, I haven't tweaked the colours at all. Only post work was a bit of a tidy up to take out a couple of spots of dust...and that's it!