public void resolve() {
                String color = "";

                Object o = GuiUtils.getChoice("Choose mana color", Constant.Color.onlyColors);
                color = Input_PayManaCostUtil.getShortColorString((String) o);

                Ability_Mana abMana = new Ability_Mana(c, "0", color) {
                    private static final long serialVersionUID = -2182129023960978132L;
                };
                abMana.produceMana();
            }