ADDRESS WRITTEN IN RED

are there any volunteers for the research?

a few days ago they didn't want to receive my envelope at the post office.

The reason was the ADDRESS WRITTEN IN RED.

They say that any color can be used except red.

Red is supposedly for controllers.

If anyone has mail from me or anyone else addressed in red pen, please send me a photo.

I would also like someone to send me a mail-art addressed in red pen. Systems and rules should be broken if they are imposed without reason.