The game adopts BXD's HTML5 platform and is hosted by enza, a social platform made by Bandai Namco Entertainment Inc..
It was released on the enza platform on April 24, 2018, and on Android and iOS platforms on March 13, 2019.
In Shiny Colors, the player takes the role of a producer at 283 Production and manages a number of idols from different units.
When the game was first launched, the first four units were illumination STARS, L'Antica, ALSTROEMERIA and Houkago Climax Girls. Throughout recent years, the game has also seen additional units: the first anniversary of Shiny Colors adds Straylight, with noctchill being added for the second anniversary. SHHis, a seventh unit, was added for the third anniversary of the game.
The game has a system similar to THE iDOLM@STER console games. The main gameplay includes lessons, auditions, and a story with visual novel elements. Different options will lead to different intimacy levels with an idol, eventually affecting the idol's tension level.
In a general approach of the game, the player organizes idol units with produce and support idol cards, and trains the set idol in the produce part of the game. When production is finished, a Fes card is created. With these cards, it is possible to form units and compete in "Fes".
