static public void removeHouse(Colony colony) { colony.house -= 1; }
static public void removeEnergyFactory(Colony colony) { colony.energyFactory -= 1; }
static public void removeStoneMine(Colony colony) { colony.stoneMine -= 1; }
static public void removeCoalMine(Colony colony) { colony.coalMine -= 1; }
static public void addHouse(Colony colony) { colony.house += 1; }
static public void addStoneMine(Colony colony) { colony.stoneMine += 1; }
static public void addEnergyFactory(Colony colony) { colony.energyFactory += 1; }
static public void addCoalMine(Colony colony) { colony.coalMine += 1; }