stuart noble wrote:

snip?


Silicone if it's going to get wet, but not otherwise IMO. I don't like
it because, unless it's perfectly done, it tends to picks up grime in
every little imperfection (of which there are a few when I do it :-)).


How about putting a bead of silicone and then sprinkling it with a
dousing of grout powder from a sieve?