Kokoro wa Itsumo Rainbow Color

 is the fourth single released by Shizukusa Yumi.

Tracklist

 * 1) Kokoro wa Itsumo Rainbow Color (心はいつもRainbow Color)
 * 2) Show me～
 * 3) Nemurenu Shoujo (眠れぬ少女) (Live ver.)
 * 4) Kokoro wa Itsumo Rainbow Color (心はいつもRainbow Color) (instrumental)