If you wan't to have those just use the icons with folders (Ps, Id, Lr, Office etc) and delete the logos on them. If you don't know how to this I can send it to you.
Wow, how is it you came across no comments yet... these are really good... you see I was making Metro Dock Icons of my own recently, then Google image searched things to help me out with finding images to integrate into my icons, then I saw this on Google images and was like "WTF?" Then clicked it... I was nervous someone copied my idea, but saw you posted this in 2011... weird, here's a preview for the icons I am currently working on... [link] I even searched up "Metro icons" on DeviantART to make sure no one took my idea yet and this didn't come up, not sure why, these are good, and in case you wondering in anyway, I DID NOT COPY, to tell you the truth, I posted a comment right after I found this... and I've been working on mine for the last couple weeks and should be ready to go in the next few days... BUT THESE ARE GREAT WORK!