Do you have any idea what color profile your uploading your images to?
Truth be heard, here's what some newbies might not be aware of:
There are many color profiles you can assign to an image. The two most common are 1. Adobe 1998
and 2. sRGB
Adobe 1998 has a much larger color gamut and therefore prints better on ink jet printers using more colors than sRGB.
sRGB displays better on screens and therefore is better suited for internet use.
Here is a sise by side comparison using one of my recent stock images I just created.
Notice the color of the bat graphs, and the yellow slice in the pie chart. I have a red/grren color deficiency so I am less likely to see that.
If your camera is taking Adobe 1998 you might want to consider changing to sRGB.
Or it's just as easily done using software such as Photoshop etc.
The clients DL'ing your images can easily convert the image back to Adobe 1998 for printing if need be.
My advice: Take advantage of the vibrant colors sRGB has to offer for displaying your images.
One final note: I'm not sure but I believe some stock sites automatically do the conversion.
I'm not sure if in fact they do, or as to what sites do and do not.
The "Cranky" MIZ