Agree on the "contrast" part. I got the glacier blue dial with blue numbers and the dark blue (almost black) hands and it's not that hard to read the time.
I also got the DJ II with dark green roman numerals on a gray face. Although the hands contrast pretty well it's not the easiest to read.
I'm sure if I was 20 years younger it wouldn't be an issue, but I DO need the contrast and that will be a major consideration on future purchases.
Think that's why the Sub is such a classic. Nothing easier to read than white hands on a black dial!