// This is an immutable string
public static final String MY_OBJECT = "My new immutable object";

// Another way of making immutable objects is by using an enum
public enum CommandButtonBorders {
    SYSTEM(Color.RED),  // The color red is tied to the SYSTEM buttonborder and immutable
    ACTION(Color.GREEN),  // The color green is tied to the ACTION buttonborder and immutable
    UPGRADE(Color.BLUE),  // The color blue is tied to the UPGRADE buttonborder and immutable
    BUILD(Color.BLACK);  // The color black is tied to the BUILD buttonborder and immutable

  private Color color;
  
  // This is the constructor
  private CommandButtonBorders(Color color) {
     this.color = color;
  }
  
  // If you need an enum color you can use the getColor method
  public getColor() {
    return color;
  }
}

// If you need a buttonborder color in another class
private Color col_SystemButtonBorder = CommandButtonBorders.SYSTEM.getColor();

 ; Identifier for the User as to what kind of button this is

  ButtonBorderBuildColor R:67 G:108 B:190 A:255   ;blue
  ButtonBorderActionColor R:1 G:175 B:2 A:255     ;Green
  ButtonBorderUpgradeColor R:208 G:108 B:0 A:255  ;Orange
  ButtonBorderSystemColor R:207 G:195 B:2 A:255   ;yellow