there is no court where I have ever practiced that would accept a watermark of any kind at whatever percentage or color. And he didn't need to ask, it's right there in the rules (state and local). Every court has extremely detailed requirements for font, size, line spacing, line numbering, color of cover for printed "chambers copies," size of margins, how the name of the court should be set out and where, and so on. Literally no excuse for this, he's lucky he didn't get sanctioned
What a fascinating cultural difference. In my corner of the world there's a Facebook page, the name of which translates to "Half-assed court documents" and it showcases badly made documents issued by courts.