I hope this is the right forum for hair color questions. I want to get midnight blue hair from medium ash brown without bleaching. I've seen tutorials on YouTube recommending adding semi permanent hair colors (like Manic Panic) to permanent blue black dyes to get midnight blue. Does anyone know if this actually works, since semi permanent dyes don't require developer, and per the label's warnings, may be rendered inert by the chemicals in permanent color and developer? I live in the middle of nowhere (literally), so although I'd normally go to a professional salon for off-beat colors, that is not an option where I live. Thanks!