Well in regards to Paimon I had something of an interesting experience.
From his sigil I got royal colors of purple and sort of a satiny red and a form of noble arrogance. Though it was the justified arrogance of someone with all the power they believe themselves to have.
Now summoning him he appeared riding a great beast. Something like a dragon but it did not seem or feel right. Seeming to me that he was more the beast than the being riding it and he said I was observant and the two became one. He showed then as something like half man - half dragon. Wings, tail, and claws of a dragon or similar beast and the rest as a noble man dressed in somewhat older attire.
He commended me on my ability and how far I progressed and warned that I was walking a dark path with my plans. He stated that he and the others would be with me ready to be called to aid in mastery of these forces.
Such boldness should be rewarded and your goal of mastery of all realms calls to me. Within you is everything and the potential for everything.