User blog comment:Mobo85/Hot off the Presses: "Across the Second Dimension" Debuts August 5/@comment-4002575-20110623005527/@comment-67.72.98.45-20110623031802

Well, I can try. Let;s start from the beginning.

Alt. Candace: I think Alt. Candace was already the leader of the Resistance but she probably didn't want her family to know about it so when she's at home she wears the usual "Dooferalls."

Alt. Phin and Ferb's appearances changing: Forewarning, this is just a guess on my part. I don't think Alt. Phin and Ferb knew about the Resistance which would explain why they were mainly seen wearing the "Dooferalls" but later on the join to protect the two dimensions so they get outfits similar to their sister. As for their skin...I'm not entirely sure. It MIGHT be because of the fact that they don't really do anything, mainly staying in the house so (naturally) they're pale. They might regain color later on when Reg. Phin and Ferb explain to them what summer is, but again this is all guesswork here.

Reg. Candace: She wasn't in the birdie, you're right. But as I see it there are a few things that could have happened. One: she (somehow) found out where her brothers went, possibly using their invention and mimicking what happened to them and thus ending up in DEI. Or two: they eventually went back and brought her to the other dimension. Personally, I think the second is more likely but it could be either one.

~SingingCookie (Sorry, that was really long...)