Original title was ファンシーなチョーカー (fanshiina choukaa). So, loanwords from English. This is a fun cover. Everyone's dressed up. And yes, it originally was in full color.

April 17th, 2013. Author's note:
"Q: Please tell us about a "miracle experience" that you think only you have had.
A: Coincidentally, I seems to continue moving in a good direction."