clientsfromhell:

I once made graphics for a very low budget Indy game, and one screen was literally described only as “rainbow factory.”

Me: What’s a rainbow factory?

Client: What do you mean? It’s the factory where they make rainbows.

Me: What does it look like?

Client: Like a factory that makes rainbows.

I create a basic factory-looking building with a rainbow coming out of the front door.

Client: Why is the rainbow factory on the ground? And why does it have smoke stacks? It’s supposed to be in the sky and if it creates smoke then it’s polluting the planet. And why is there a rainbow coming out of it. I didn’t tell you to do that. Now do it again and do it right.

Client was an adult in his mid 30s, not 12.

It is possible the client was referencing rainbow factory, the song. In which children are slaughtered and their pigment is harvested to create rainbows.