I noticed you can get Argyll and PC Jackets in green and navy blue.

The Argyll I can imagine, but shouldn't the PC Jacket be black only?

After all...it's the Black Tie for the kilt.

Overhere the black tie (tuxido, diner jacket...and in Holland we call it a "smoking"...don't ask me why) is always black

I really like the green PC, but is it proper evening dress?

Just wondering