I am using images to provide rounded corners for internet explorer but the images are a slightly different shade than the actual border is in IE. This is not the case in Google Chrome or Firefox.
In IE the image corners are a slightly different shade than the rest of the border. I think this is because of "color profiles" but I still don't know how to fix the issue.
If you are using pngs to create your corner you need to strip the gamma information out for IE. A great tool for this is PNGOptimizer: http://psydk.org/PngOptimizer.php