Hi, wow what a post, must have taken a while to write!
With respect some of those colours are not for healing but for causing death and inciting accidents.
You must never use grey with healing. Grey is the color of illness and bad energy. Grey, applied repeatedly to the aura can bring about a slow death,
Its all down to knowing what you are doing really. For an inexperienced person to dabble with healing with colours can be tremendously dangerous.
A couple of examples:
Red can bring on sudden attacks, accidents, bloodshed, violence, and hatred. Red can also be used to incite wars, anarchy, and cruelty. Mars rules red. Red is of the element of fire. The color red and rule the root chakra.
Red can be used for positive as well but i would strongly recommend to people who want to heal themselves NOT to use grey at any cost. Also to speak to someone with advanced knowledge with these things first and not the crap taken from new age books.
I mean no offence your post is very good but i had to mention about the grey as i know only too well what that can do. Im sure you understand.
