Other shadow chasers claim that red is a color associated with an energy that seems to be on guard duty (often watching over a last outpost, or a loved one who has died).
Dee asked whether a red orb should be considered negative or harmful.
In my opinion, witnessing orbs with your own eyes (in person) is far more credible, and harder to debunk than mere photos of orbs.
If you see a bright, glowing orb with your own eyes (in person, not in a photograph), there's a good chance that it may be paranormal.
If a particle happens to be of a certain makeup or shape, it will tend to absorb certain wavelengths of light and reflect others, thus giving the perception of a certain color.