It definitely sounds like you saw part of your aura. Mood, relaxation, concentration, lighting, and background all can contribute to seeing auras. My best successes (some included color, like you saw) were all unintended. They just happened when the conditions were right. Once they become more familiar it will get easier to see them. The most common concerns I hear about are afterimages and having just imagined it. The important thing if you want to develop this is to not worry about what it might or might not be. Allowing the ability to grow gradually will diminish any doubts that remain.
News:
Welcome to the Astral Pulse 2.0!
If you're looking for your Journal, I've created a central sub forum for them here: https://www.astralpulse.com/forums/dream-and-projection-journals/