Create an image depicting a sunset - in greyscale. This means you must not use any saturation in your image. A good way to work this out is by looking at the hexcodes - they should all be in this format:
So #a3a3a3 would be acceptable for this challenge, as would #525252 or #000000.
Canvas Size - Max 200 x 200.
Colours - Min 8; Max 16.
Transparency - No.
Animation - Optional.