Yes. Stonefur is.
Yes, Silverstream is from RiverClan and her mother and father are Willowbreeze and Crookedstar.
Bluestar's mate was Oakheart, a RiverClan warrior. They had three kits together - Stonefur, Mistyfoot, and Mosskit.
he wasn't killed by the riverclan leader or even a riverclan cat for that matter. he was killed by tigerclaw.
toms are shoes so the toms flag represents toms company
RiverClan leaders include Hailstar, Crookedstar, Leopardstar, Mistystar, and current leader, Leopardstar.
Willowbreeze and Heathershine are RiverClan cats that are tortoiseshell in coloration.
Purple glitter Toms
Rogue RiverClan
unknown
Dapplepelt is not from ThunderClan. She is a RiverClan warrior in the Warriors book series by Erin Hunter.
Oakheart's parents are Shellheart and Rainflower. Shellheart was a RiverClan warrior and Rainflower was a former RiverClan queen.
You can get toms at DSW.