I want an image that I made in photoshop to be the background for my website. I has a cool design at the top, then a solid colour for the rest of it. Now the image is not that big, so I put a background colour (the same colour code as the solid part of the image). For some reason it still shows the outline of the background image (it seems to be darker than the background colour even though they are the same colour). I find this really weird and not making sense! Any ideas how I could fix this problem?