Angels can and do appear to people using a wide array of different colors.
This order is most commonly known because they are mentioned by name in the Bible -- Michael, Gabriel, and Raphael.
In Judaism, there are seven Archangels.
People often mistake your kindness for weakness and try to take advantage of your good nature.
Lucifer is also considered an anointed cherub.
So much for the post-Renaissance inspired image of the cherub as a cute baby with wings! Gabriel governs communication, so also the throat chakra, and Michael protection, so also health in some cases.