Look in this thread, I posted a picture when I got my suit, it's all black with orange stitching. Orange is subtle, so it does not really scream at you
EDIT: To save you the trouble, here is the post:
Remember, you asked for this........
EDIT #2: looking at my pictures I thought that stitching looks kinda redish.......I did order red stitching, sorry for confusion.
Round rings are bulkier than ovals, so Kubi tries to give you an option regarding your hand size. Oval rings, you can't really squish them any more than they are on small axis, big axis does not feel that bulky anyway.
You can use something else or cut the seals out, but you do need equalization. I use a piece of bungee, with knoted end positioned in the middle of my palm, so I can sort of pull the cord from under the seal if I get glove puncture.
Seals are all the same.