---

Starbrite does not make the correct color, so your choice is OSI #450. I would not try to caulk over what is there, you would be better to dig out the old stuff and replace with all fresh. I know it's a pain but it's really the best option, then you will be done for awhile. If you don't then when the old stuff cracks under the nice new caulk, and the new caulk cracks because of it, you will post on WC how the OSI caulk didn't last. Take the time to do the prep work correctly and your repairs will last a long time.