Tips/advice for Custom Dyeing Vinyl?

I've been considering putting together a custom Dollfie for a while, but what complicates this is that my vision would be one with similar coloring to a Dollfie Icon. Specifically its the unnatural skin tones like the blue, purple and green. While I love the Icons, but I am more interested in putting together a MDD for this kinda project. I would also just feel real guilty if I wiped on of their faces for any project, they are just so pretty lol.

So that's where my question comes into play. Does anyone here have any examples of custom dyed dollfies, what supplies you would need, or any tips on how to go about dyeing one? I know its possible, as I've seen a custom dyed Miku online a while ago. I don't have any saved photos on hand nor any info on how they went about dyeing her, so I am just left a bit lost.

Any tips or recommendations would be appreciated !