I must advise you that this has a very high chance of screwing up your camera, especially if you mess up on the masking job. My pop-up flash was permanently popped-up, but I never use the pop-up flash anyways so I just super-glued it down.
For this Instructable you will need: A dslr camera, masking tape, spray-paint, super glue, and an x-acto knife.
(the camera shown below is not finished yet as I still have to go in with details and buy an eyecup for it)
Step 1: Prepare the camera
Prepare the camera for masking and painting by taking out the batteries (not that we will take the camera apart, but so that we don't accidentally paint the battery).
Then sand any brassing or rough parts down using fine sand paper (120+).
Finally I wiped down the camera with a slightly wet sponge just to get it clean.