[TheMilkCarton]

In the latest version:

1) Username check field still stays green after you delete username. However, border still turns red and states "needs to be longer" as it should.

2) If you were to click in the CAPTCHA field, even if it's still greyed out, and then click out of it, it still tries to match the CAPTCHA and returns an error. THEN, it is also no longer greyed out. It should probably only attempt to verify upon typing out all 6 letters (It's always 6, correct?)

3) If you were to go back to a previous stage to change something, i.e. a username or password, the first box in the next step "un-greens" itself (the background color), although it still remains "confirmed" and this doesn't effect whether or not the "Complete Registration" button is greyed out. <--- This is mainly only aesthetic, but it could also be confusing to some people why the first password or first email box is no longer green.

A solution to #3 could be as easy as forcing the next input field to reverify itself if you change the input field before it. I'm sure this is possible in jQuery. (you should probably also force it to check and make sure the field already has a value, of course)