About the password, glad you got it to work with a new password, some people MAY need to change their passwords to a higher security level (at least 8 characters, an upper case and a number) especially new members (those JUST registering now will need to do that) it is a security feature you will find nearly everywhere today - I use that same format in my workplace as a Federal Employee. I could lessen the password restrictions, but to do so would defeat the purpose of having greater security. I assume others may find a similar problem and I'll post on this issue, thanks for bring it up and glad you got it worked out.
The color scheme is a default scheme that comes with the layout theme of the new forum. I know the two-tone brown was very easy on the eyes and practically a trademark look for the old forum. Shortly, I hope we will have the ability to NOT change themes, but have color options within the themes. You see, themes are how the buttons and features are placed and not all themes are alike, many have lots of features, some have less and tracking multiple themes and especiallt trouble shooting can be a full time job, something no one needs to deal with - it would be an administrative headache and one to the membership (imagine posting certain posts using smileys or scrolling text and other readers couldn't see any of that because of theme issues) that is something like what I'm saying.
We are addressing issues like these, and COLOR OPTIONS are very likely to come soon. The layout willl not be changing for some time - so get use to where all the tabs and buttons are, it really is an easy JUST DIFFERENT layout - and when color options come, I'll announce it. Hang in there, things will always get better. But for now, we have made substantial improvements in your personal security, elimination of spam (hopefully) and a forum that will continue to grow with few threats from the evil doers to forums.