After uploading an image to NetCommunity, the image color changes. It may change a neon color.
This is typically the result of how the image was created or saved. Usually, resaving the image in a simple image editor, like Microsoft paint, and then uploading the image back into NetCommunity, will allow the expected colors to be displayed.
This is not unique to the NetCommunity product, but how any website will render an image.