Pleja's pic is based on a model who looks like her. Asket's pic is from Dean Martin show, also a lookalike. There are no real photos of Pleiadians I know of. If you want to get in telepathic touch here's a sample guide but you'll need to curb your barbarism for a few months, or if you like sightseeing (much easier) you can try CE-5. Whatever the shills attack should work.
There are humans of all skin and hair colors everywhere around the 'verse. Menara from Billy Meier's contacts was apparently black. Before you ask, yes, she did own her spacecraft.