If a color needs to be added, the glass powder can be "enhanced" with copper or other metal oxides as well as elements such as sodium, calcium, potassium etc.
ຖ້າຕ້ອງການເພີ່ມສີ, ຝຸ່ນແກ້ວສາມາດ "ປັບປຸງ" ດ້ວຍທອງແດງຫຼືຜຸພັງໂລຫະອື່ນໆພ້ອມທັງອົງປະກອບເຊັ່ນ sodium, calcium, potassium ແລະອື່ນໆ.