Sounds like your problem isnt just the rain... :-|
how about the hood scoop off a WRX?
I like how you went up the concrete sides with the grey, it makes it look like it is trimmed in stone. The bottom of our wall is a bit different, with the studwall being flush with the concrete "kick area" (???) at the bottom. So that when they added drywall, it actually hung over the concrete, so they used wood trim around the bottom of the drywall. I think it will make a neat effect once all the concrete is brown and the walls are tan and trim is white.
I am headed (or WAS) headed to St. Pete this morning. My flight was cancelled adn I am rescheduled for 2:05pm. So this project is gonna be on hold for a couple of weeks. I have to get back in town, finish the wood fence that I started back in... umm.... September.... then I have the OK to do this...