The pool is emptying as I type, so it's time for a few last minute questions about retiling. First, would it be a good idea to purchase a few extra tiles? When we moved here 12 years ago the pool already had missing waterline tile. I don't know if that's normal wear and tear (in which case extra tiles might be a good thing) or something to be expected on a 30 year old pool. If we get extra tiles, how many should we purchase? The pool is roughly 20x40 with a spillover spa.

The second question is for trim tile on the step edges. I figure it would be for safety purposes primarily. Do people here have any feelings about it, pro or con?

Finally, grout color. Do colored grouts fade, and/or are they more likely to stain or show mustard algae (my perpetual evil nemesis )? If anyone wants to weigh in on esthetics, we are using the Oyster Blue color here and have weathered brick coping.

Thanks for any help.