?????
Yo seriously I have no bad will. I guess it's lack of body language and voice but re-read my responses with a light tone not aggressive/confrontational.
OP asked if people found it racist, I replied literally starting with imo no. I gave examples of fictional characters literally named Shiro after their aesthetic characteristics
You respond with its not a good equivalent because they are Japanese whilst OP's friend's character is not. I then gave examples of Japanese characters with quirky english names to illustrate why I think it is acceptable. I never once thought of this as an argument but a discussion, I was replying to your reply??? How else would I convey my thoughts?
I'm a POC too (black west african) and simply presented my own thoughts on the matter, so please don't dismiss me when it comes to my opinion on how black characters can be portrayed...
Obviously we have different upbringings cultivating in different perspectives on the matter but for me growing up there was a rhetoric that dark skins can't wear bright hair colours, black girls look ugly with bright lipsticks etc etc, excessive policing on beauty expression and standards that those of fairer complexion were not held too something I vehemently disagree with hence why I am ok seeing black/brown skinned characters with unorthodox colour palettes for hair.

Take Atsuko Jackson, dark skin, 4c hair texture, white hair colour, Japanese name, western surname. Its all stylistic and unrealistic but in context of the anime it works and I personally am a huge fan of the character design
I have different standards for different projects depending on the target market and genre. Assuming its not grounded in reality then its fine imo. In the same way a world with a japanese ninja with blonde hair blue eyes named literally fishcake a dark skinned character with white hair named Killer B works, my point is why be realistic/super accurate??
Why do you feel talked down too/that it is your problem. I'm literally just replying to your reply to my reply??? 
This isn't about you so where you're coming from is not really important? If that makes sense. This conversation is specifically about non-asians using japanese names, and black/brown skinned characters being portrayed incorrectly.
In order to communicate one must understand the other persons perspective no?
For me it is just like this

Light Yagami, japanese dude with unorthodox english name
To conclude, a black character named Shiro after their hair is a not racist. Corny yes. But if the rest of the world the characters created is of the same vein then its fine.
Can a third party comment whether my responses come across as rude?