I have a suspicion this is too much tinfoil hat, but it's kind of interesting:

http://www.libertythink.com/totalinformation/BlueMars.htm

That golf ball in the crater is interesting too.

Author is Dutch
http://www.mysterydatabase.com/modules.php?name=News&file=article&sid=636
The "Expert" is well known wacko, with motivation. Oh, Photos dont show anything? I can fix that! http://keithlaney.net
(http://keithlaney.net/)
http://www.anomalous-images.com/Odyssey/TEM_hoax.html
You are still a fucking asshole. Nothing you post is capable of having worth. So, STFU

The most interesting parts of the article are before and after the bit referencing Keith Laney's images. The color differences are shown between Associated Press images and NASA images, not modified ones. The odd dome in the crater is an image (http://ida.wr.usgs.gov/fullres/divided/m15012/m1501228a.jpg) directly off the government servers. The whole Keith Laney angle is really irrelevant. That hoax site doesn't even refer to the images on the site I linked...

That's a good point though about the author being Dutch. I forgot those guys are all color blind and stupid. What was I thinking.

Why cut the whole post? Only the last line was the personal attack. Dont worry I know the answer.

Anyway....
Back to showing you why this is nonsense. Again.
Showing Keith Laney as a whackjob is not irrelevant. It is in fact, the crux of the matter. While the site I posted doesnt talk about the specific site you posted, it does show how Laney manipulated data to produce a desired effect. In his case he is committed to trying to prove that there are the ruins of a Martian city.
As the hoax site shows, the images from Mars basically come back as raw data, numbers and such, the special NASA software then translates the data into images. It is not Polaroids that are being sent back. NASA has made this software open to people to use, but it seems as if Laney has exploited the data before, if he were to simply change a few varibles in either the code, or the software, he could produce any color he wanted.
Which I suspect he did.

I'm not saying Laney is or isn't a nut. Like I said, first thing in my original post, it smells a little like tin hat stuff anyway.

But, that crater with the sphere in it has nothing to do with Laney. Neither do the first five photos.

The second two deal with exactly what you're talking about with the image format. Note, all computer images are just raw strings of numbers that require special software to translate into images. That apparently red enhanced image (http://marsrovers.jpl.nasa.gov/gallery/press/spirit/20040108a/color_panorama_sol6-A6R1_br.jpg) is from NASA, not Laney. He plays a minor role in the overall evidence the site presents.

See how the registration mark on the disk matches orientation? That corner marker that's bright red on the NASA photo should be blue, based on the photo of the vehicle before it was launched.

About the only thing that would account for that is shifting the blue component of the image to red.