WASP
I have to admit, although you probably meant your comment in a light-hearted way, it definitely came across as b****y rude ! Im not surprised you got the reply you did, lol. Everyone makes mistakes, and this thread proves that you never know who reads them. :-?
Still - you have apologised, which is more than many would do.
Incidentally i have a blue sponge if you want to buy one for your tank - rarely seen in marine circles, this is the ultimate for the enthusiastic aquarist. Its even shaped like a christmas tree - how much would you offer ? More than $20 ......