public void setSelected(int row, int column) {
		for (int i = 0; i < xSize; i++) {
			for (int j = 0; j < ySize; j++) {
				ColourSlot slot = slots[i][j];
				
				if (slot.isSelected()) {
					slot.setSelected(false);
				}
				if (i == row && j == column) {
					slot.setSelected(true);
				}
			}
		}
	}