Tea stain and the door

[thekrenz]

I was involved in a thread recently about the tea stains on JKR's 
site.  It turned into an interesting thread about coffee consumption 
by teens and young adults.  I'm bringing up the tea stains again 
because when I finally found the right key and then opened the 
drawer, guess what was on the notepad?...yep...the very same tea 
stain as appears all over the site!  Now, I don't want to belabor the 
subject, but is this really a coincidence?  Surely JKR isn't that 
sloppy with her tea!?
Cyndi