The little bottle containing a little bit of liquid is as clear as a purified mineral drinking water in the real world. And despite being called Holy Water, it doesn't have any apparent effects on anything, except when it is used against the undead.
"AAAAAAHHHHHHHHHHHHHH!"
The Sixth Commandment screamed. A scream of death and despair. As the Holy Water poured all over his body, the water became acidic the moment it touches his body. Imagine taking a bath using any kind of corrosive acid that can melt your flesh in just a few seconds? That is how the Sixth Commandment is currently experiencing the Holy Water bath as I pour the contents of the bottle into the rotten body.