Trinity: color green.
Our province is more high-church than I grew up in and so I've had to learn more of the traditional terminology. "Trinitytide" instead of "Trinity season," for example.
"Thurible" instead of "incense pot" (which we never used anyway). I got to be "Thurifer" recently, but as we have parishioners who can't take much incense I didn't go wild with it.
I think we just have Pentecost, then Rogation Sunday (the green altar decorations come out), and then the Sundays are called 1st sunday after Pentecost right up until Advent. However, I've just remembered that we had the white altar cloths out last Sunday. Hrmmmmm......