Actually I have no idea where bulb manufacturers come up with their kelvin ratings. Daylight in most places is around 6000k (it can vary a bit) which to our eyes is usually interpreted as crisp white. Check out this article for verification:
http://en.wikipedia.org/wiki/Color_temperature . Anything higher than that should be blue, but I've had 10,000k bulbs that were white to slightly yellow, so the bulb manufacturers are pretty much lying industry wide, lol. I demand indignation over that damnit! They're ripping us off!
And actually the color temp of the tank includes all illumination at a given time, including actinic/blue, so your tank will be at a higher color temp with them on than with them off.
A few bones to nit pick at here.
1. First of all almost all photographs are manipulated (unless you shoot RAW and present the RAW image which most people don't do as they are huge and not very pretty). If you shoot in jpg at all for example what comes out of the camera is enhanced to some degree. Sharpening, contrast, saturation and other variables are all adjusted. Period. So where is the limit at calling foul? I agree there are some that look like it was ran through a photo editing program and really pumped up for further enhancement and that is shady, but all digital photos you see are pretty much enhanced to some degree (and btw most of the photos of my tank are shot in RAW and then I run them through Lightroom. I try to get it close to what my eye sees but there is some interpretation by me on that of course). Oh and I should also mention some aquarium lighting freaks digital imaging sensors the hell out sometimes - even really good ones like my Nikon full frame stuff.
2. Shocker, people are going to present the best image possible for anything they sell. If they think it looks best under Radiums they're going to shoot it under that light. It's opinion if you think this is bad or not. That is what it is.