Shoutbox

That's because you're modifying the metadata for the image. The metadata contains information such as colorization and paddings (this is probably what screws up). This could cause such problems, make sure you make no modification to the metadata, except for the colorization section. I'm not sure how you can do this easily, but you can open MsgsRes.dll in Resource Hacker, find the ID inside the 4006 group, save the resource, open it in a hex editor and find the meta data there. It's pretty advanced, but first, make sure you only have the colorization tag inside the metadata-tag.