Would it be racist for a person of one race to cosplay as a character of another race if it involves body paint?

Mo
Another thread made me wonder: say you really like a black rapper and you're white, there's a cosplay party and you dress up like that rapper which includes dark paint all over your body. The person shows respect for the rapper and isn't doing it in a mocking way, only in a way that allows them to celebrate the character. In your opinion, is that racist since it could be considered blackface, or is it okay bc the person isn't doing it with intention to mock? Explain further if you'd like to. 
Btw I would never do this, just genuinely wondering since I saw it on another thread. 

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