Love that mini I was contemplating it as well because it sort of "glitters" due to the way the material feels like it has that suede veil texture. I passed due to the same concerns you have too. I would say use it carefully and enjoy it to its fullest but definitely extra careful. On dyeing the bag, definitely ask professionals but I wonder if that would come out well. the reason is not because of the metallic, but rather the texture of this specific bag. I've not felt any metallic (chanel or non-chanel) with that veil feel (hope you know what i'm referring to since you have it? It's really hard to describe! it's like this almost stocking like feel of the leather surface...?) if you ask a competent professional on dyeing it, definitely would recommend it's someone who can feel the texture of the leather first before deciding... the reason is that I wonder while the "base" leather on this bag is sturdy, whether or not the top layer that I kept rambling on about would be able to endure the dying process without being damaged or would come out well in how it takes another layer of color dye without looking "patchy" or something. They may very well be able to do it at one of the trusted leather professionals like leather surgeon, but perhaps safer to have them touch and feel this particular bag's material before making that call/judgement as for sure the texture of this one is not obvious by photo alone. HTH.
