If you could only use color, I would name it: 'Amplified hollow technique: Clear.' Even though blue = black, I assume red = White. Black + white = Grey. Having it clear would make it better because he would be erasing everything, making it, therefore, clear.

Just think about how much more dangerous could be done with a better version of this thing. I'd name it: 'Amplified hollow technique: Infinite oblivion.' I'd think it could be solar system-level power, and as you get a boost in power level, it could go to galaxy level. And all the other Gods would be sweating bullets when the young master angers Hades. (P.S. I don't think you are going into Xianxia, but that is what I was thinking about.) Unless it was implied that Special Infinity: Void was the upgraded version, in which case forget everything.

An exceptional story, a bit cliché, but it scratches the 'Feel like a god' itch that not many novels can get entirely. The author has added other worlds to the world-building, which can make it dull for some readers. However, the author has done a great job of showing respect towards those other worlds and has successfully incorporated them into the story. And for the main world, he is doing satisfactorily.