It's off-color.

His mum's a little off-color sometimes.

A little off-color, but very nice.

Yes, I was also off-color.

You call it off-color, I call it nuts.

A little off-color, but very nice. Oh!

To which Roman made an off-colored remark.

Your color's...off.

Look at that subtle off-white coloring.

Delysia's going to be a bit off-color about it all, I'm afraid.