NEW YORK, New York -- Clay Aiken has retracted some of his 'colorful' criticism of 'American Idol' runner-up Adam Lambert.'Since my previous blog got dissected like a biology lab frog, I suppose I should clarify and even retract some of what I wrote,' Clay wrote on his official Web site on Friday, following a Thursday post where he suggested Adam's performance of 'Ring of Fire' from earlier in the 'Idol' season was 'contrived, awful, and slightly frightening.'