Bad timing with Clayton. Season ending injury just after you acquired him. Too bad.
Colston is the best option, IMO. This past week is his best so far, and someone might actually think they're selling high on Colston if they get rid of him. He's Brees' #1, and that's a good offense. The Saints are struggling because they don't have a running game and defenses are aware of that. But Colston has been without a TD this year, and he is too good (and his QB and OL are too good) for him to continue this mediocre pace.
Steve Smith NYG seems like a good candidate. After his year last year, teams are focusing on him and leaving Nicks. After his second multiple touchdown game this week, Nicks will be getting more attention by DBs. That's bound to benefit Smith.
I would NOT buy Carolina Steve Smith at any price. The QB situation is awful, and the team is awful. Smith is a good player and would have more value on just about any other team. He will probably have a big game here or there, but will be completely inconsistent throughout the season.
I'm a big believer in a Roy Williams comeback year. With Austin getting the attention, Williams is going to have opportunities. He doesn't seem to have the chops to be a team's franchise receiver, but is absolutely has the skill to be a consistent low-end WR2-WR 3, IMO.