Java how to set child class instance variable with super class constructor

I have a child class with two instance variables color and position. The constructors takes in both of these. I first call the super(color) constructor which contains setColor(color)->this.color = color. According to debugging tool, this is setting this.color for the super class rather than the child class which invoked the method. Is this not the proper method of using a super class constructor to set instanced variables?

Rook.java:

public Rook(String color, Position pos) {
    super(color);
    // at this point this.color == null (for Rook)
    initPosition(pos);
}

GenericPiece.java:

public GenericPiece(String color) {
    setColor(color);
    // at this point this.color == "white" (for GenericPiece)
}

public void setColor(String color) throws InvalidPieceColorError {
    if (Color.checkValid(color)) {
        this.color = color;
    } else {
        throw new InvalidPieceColorError(color);
    }
}

!Here's a picture of debugging information1