What is my Chinese name in proper Japanese?

Konichiwa minna San! I'm curious as to how or what my surname would be in Japanese. My chinese name given at birth is 黄耀豪 . Surname is 黄（yellow) while 耀豪(hero or fighter or warrior based on my parents explanation!) is the second name.

I read up that kou/こう is yellow and kiiro/きいろ is yellow colour in Japanese but it doesn't seem to be a surname! Could someone help out here? Thanks 😁

Hi :)

When people with Chinese-kanji names come to Japan, they would either (1) pronounce the name as it is in the original language, or (2) adopt the Japanese pronunciation of the same kanji.

So I know someone living in Japan whose family name is 黄, and he simply goes as ホアン (pronounced ho-a-n) in katakana. This is (1).

If you go (2), it would be "Ou." This is the reading of the kanji 黄 in Japanese as you found out. You would not change it to "ki-iro."

There is a Taiwan restaurant "黄さんの家"(Kou san no ie; Mr.Kou's house).

黄色(kiiro) is read by kun'yomi, this of reading is not used to read Chinese name anyway.
http://nihongoichiban.com/2011/03/21/what-are-onyomi-and-kunyomi/
http://www.tofugu.com/2010/03/23/the-types-of-kanji-in-japanese-onyomi...

Just a question though, what would his main name 耀豪 be like in Japanese?

Chinese pronunciation of 耀豪 is Yaohao.
His name Japanese reading of is yougou.
黄 is possible to read also kou both ou.