Hello, and welcome, TheFlyingRaccoon!
First of all, so sorry for your disappointment —skintone matching can be a gamble in this hobby , so I can understand your frustration. And Jiaou skintones are often marked in a confusing way, depending where you purchase from, so don’t feel too bad about it.
Now, regarding the oil pastel colouring method... I feel I must caution you against using this on your Jiaou body. While GubernatorFan has used it with some success on a couple Jiaou’s before, I personally had a bad experience with my attempt, and the Jiaou body ended up getting scratched up by the pastel stick. The problem is that the TPE material that they are made of is basically the same consistency as styrofoam, and is fairly delicate , and doesn’t hold up well being washed with soap, either. In comparison, the silicone that the tbleague bodies are made of is much more robust and holds up much better with this method. Of course, by all means, feel free to try it out, but I just wanted to mention that I’d had a negative experience when I attempted to colour a Jiaou body with the oil pastel method.
Where are you located, out of curiosity? Just wondering if you could maybe try to sell the too-pale Jiaou body on ebay and recoup some of your funds that way. I’d recommend doing that if you can, and then saving up for either a tbleague or a different Jiaou body that matches the head you want to use better. : )
If you are worried about sellers to use , GianToy are very good and ship quickly to the U.K. (that’s where I’m located). They are back open now, and I have already received my most recent order from them, if that helps at all. : )