[madsushi]

Sorry, that's probably the wrong word for it. I meant the vibe of "Patrick really wanted me to change this, so I did, but not quite how he had envisioned".

[cperciva]

Maybe you're looking for the word "trolling"? I mean, that's kind of the essence of April Fool's jokes.

[mercer]

Gentle ribbing is how I'd put it.

I'm a very happy customer, btw. Thanks for your work!