What are "striking" glass colors?

A small number of Bullseye glasses appear pale or colorless in the cold sheet, but "strike" or mature to target color when fired. The images of striking glasses in our online store and product catalog show how colors appear before and after firing. Striking colors can vary, depending on temperature, atmosphere and amount of heatwork. For projects that are especially color-sensitive, we recommend fusing or torchworking small samples of striking glasses to best predict final color results. Our video lesson Heatwork and Color covers the topic of striking glasses. You can also learn more in this article.