Colorful ~Anata to Ita Jikan~

 is the first digital single by Shimizu Riko.

Tracklist
The single includes the theme song for the movie Boku wa Boku, Kujira wa Kujira de, Oyoideiru. (ボクはボク、クジラはクジラで、泳いでいる. ).
 * 1) "Colorful ~Anata to Ita Jikan~" (Colorful～あなたといた時間～) - 5:53
 * 2) "Colorful ~Anata to Ita Jikan~ (movie ver.)" (Colorful～あなたといた時間～ (movie ver.)) - 4:07