A single-colored kimono that may be worn by married and unmarried women alike. They are mainly worn at tea ceremonies. The dyed silk may offer some patterns, but they are made within the fabric and monochrome instead of being printed.

one's real character

rose (color) / (figuratively) bright, optimistic (future)

(physics) chromodynamics

look before you leap, one should think twice before doing something

"the grass is always greener on the other side": The others' circumstances seem more desirable.

Chrysophyta

Obsolete spelling of カンザス (Kanzasu, “Kansas (a state of the United States)”)

Rare spelling of レモン色 (“lemon”) (colour)

peony