I'm not crazy about the green myself, but I do like the cover. Issue 232 was the first Batman comic that I bought since getting back into the "hobby" a couple of months ago. I really wish I hung onto the copy I had when I was 18. I'm sure it would have graded in the 9.4-9.6 range at the minimum.
Anyway, I actually became really interested in issue 227 when it was featured in the Dark Knight documentary from the movie Blu-Ray. Other than it being a cool cover, I never knew of it's significance in the collecting community.