Well it might be a nitpick. But I'm still gonna nitpick it to death. I'll give you the point about O'Brien and Worf. But tell me this: do you think Worf forgot that at one time, before Tasha Yar died, his uniform was red?
I doubt it, but you can't imply that he forgot it by "it feels good." He could be saying it feels good to be back in red. He could be saying it feels good to be on a command track. He could be saying it feels good to be back on duty again. Or any combination thereof.
They don't have to list their complete biography over an innocent comment.