This might not be the right place, but I don't known where else to put it. Here are the links to a few Lost Colors-related MVs that I found on niconico. The first one is my favorite, but I guess the last three deserve a special mention just cause.
http://www.nicovideo.jp/watch/sm6841472
http://www.nicovideo.jp/watch/sm8792650
http://www.nicovideo.jp/watch/sm7145546
http://www.nicovideo.jp/watch/sm4361805
http://www.nicovideo.jp/watch/sm4295929
http://www.nicovideo.jp/watch/sm4106780
You need to be registered in the network to see the videos. If you have problems registering, PM me and I'll help the best way I can. I think I could also upload the videos in the youtube or something, but first I need to figure out how to download them in the first place.