example.cs

   // Create a custom for the Keyboard
    var keyboardGrid = KeyboardCustom.Create();
    // Set the whole Grid to Green
    keyboardGrid.Set(ColoreColor.Green);
    // Set the A Key to Red
    keyboardGrid[Key.A] = ColoreColor.Red;
    // Set the Key in the second row and the fifth column to Red
    keyboardGrid[1,4] = ColoreColor.Red;
    // Apply the grid to the Keyboard
    Chroma.Instance.Keyboard.SetCustom(keyboardGrid);