デコ服 (dekofuku) is related to that last one. As previously found, deko comes from "decoration." The second part of the word, fuku, means clothes. Huh. Sounds kinda like a swear word when it's in romaji like that though. Anyways, dekofuku a little different from dekoru in that while dekoru usually refers to little plastic diamonds applied to things by glue, dekofuku refers to things you attach to you clothes, like buttons and brooches. That way, you can customize every outfit even if it is old. In these times of worldwide economic crisis, dekofuku is seen as a very good way to save money and yet stay stylish.
Of course, the first thing I thought of when I read about dekofuku was "flair."