Introduction
You can set cards to gray, which switches their display from color to gray. This feature is controlled by the client and requires no special operations on the card.
Android
After you retrieve the card in the onLoaded method, you can perform operations on the CubeCard.
cubeCard.setGrayFilter(isGray);iOS
After you retrieve the card in the onLoaded method, you can perform operations on the CubeCard.
[cubeCard setGrayFilter:true];