Rainbow galore for this pastel outfit, featuring a seigaiha (stylised waves) kimono, paired with a tate nishiki (brocade with warp made from different colored threads) obi depicting meibutsugire (old patterns) in kiredori (style mimicing torn and patched paper/fabric pieces).
Meibutsugire or jidaigire are auspicious patterns (originally from China) which were popular during Muromachi period and mostly used for ceremonial items (for ex. to wrap tea ustentils). Those motifs included:
arisugawa (geometrical pattern with stylized deers/animals)
shokkō (cloisonné pattern)
sasazurumon (blooming bamboo, often in arabesque)
araiso (wave-beaten shore with jumping carps)
hana usagi (rabbit among flowers pattern)
taishi kantō (ikat pattern representing sitting Buddha figures)
as well as several stripe and plaid, like tsurugaoka kantō, hino kantō, funakoshi kantō, or yoshino kantō + other fabrics like toraigire