Lead provides a pale yellow colour. Silver oxide gives a permanent yellow stain. Finely divided vegetable charcoal additional to a soda–lime glass provides a yellow colour. Selenites and selenates give a pale pink or pinkish yellow. Tellurium seems to present a pale pink tint. Nickel which has a potash–direct glass https://beckettazwqh.aboutyoublog.com/42249954/top-guidelines-of-aluminium-sliding-door