Nate Dunlevy has his eyes on options early in the second round. He too thinks receivers or tackles are in the mix:
There is a cluster of relatively similar wideouts that all fit between picks 20-45 in this draft.
Everyone from Stephen Hill, Rueben Randle, Alshon Jeffery and even Mohamed Sanu (a massive reach) have been mentioned for the Colts.
Basically, if you run a mock draft and want the Colts to take a wideout and have Fleener off the board, you slot whichever of these guys hasn't been taken already and give him to Indy. Hill would be an absolute steal for the Colts at 34, but you have to wonder if he's still on the board then.