The term "kaleidoscope" is derived from the Ancient Greek κάλος (beautiful), είδ(ς) (form or shape), and -σκόπιο (tool used for examination); hence, "observer of beautiful forms."
"your name is" is correct English and when used in this way means both your full name or a part of your name (usually surname, depending on the context). "your names are" is also correct English, but...