Cards support a grayscale mode that switches their display from color to grayscale. This feature is client-controlled and requires no changes to the card itself.
Introduction
The card grayscale feature switches a card from color to grayscale. 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, perform operations on the CubeCard as follows.
cubeCard.setGrayFilter(isGray);iOS
After you retrieve the card in the onLoaded method, perform operations on the CubeCard as follows.
[cubeCard setGrayFilter:true];