11. The flesh is thick, firm and white and may discolour yellow when bruised. 12. With iron ( II ) sulphate solution, the flesh slowly discolours to grey. 13. It is a white to cream colour that discolours when cut, bruised or damaged. 14. Bronze is used to make bronze wool for woodworking applications where steel wool would discolour oak. 15. The eggs are round and milky blue when laid, but quickly discolour in the increasingly dirty nest. 16. One is that I heard the fumes from certain glues can discolour the porcelain of the watch face. 17. This is done to prevent growth of mould which could damage the plants and discolour the sides of the terrarium. 18. The white flesh of the entire fungus does not discolour when damaged, and is soft particularly in mature specimens. 19. Solder can be used to join the wires, but this causes the enamel to discolour and form bubbles later on. 20. In August 2003, the tower was painted an ultramarine blue to cover the existing light brown which had started to discolour .
