How it works:

The picture in the controlled app has either black or green pixels.

Any pixel within the image's bounds can be turned black or green with a feature flag in the dashboard.

Demo users can toggle existing pixel flags or create new ones as they wish.

The format for a pixel feature flag is pixel-x-y.

You can create other features and constraints but they will have no effect.

The feature toggling code for the controlled app is simple:

let flagValue = 0;

/**************************
*  Feature enabling code: *
**************************/
if (GridState.flags.isOn(flagName)) {
    flagValue = 1;
}

          

The source code for the demo application is also available in this public repository.