Just tell him:
Pink is the new blue.
Real men eat quiche and wear pink?
Oh, nobody will see. (They better not!)
Claim the PINK!
Don't be a sissy!
This is payback for [fill in with a horror story of something he did].Look really stern saying it.
Honey, I thought you should try that metrosexual thing.
See - lots of options. ROFL. Pat wore pink for a while too. teehehe