No they're not but if I worked with red glass all the time I would get stuck in a rut. Instead, I really like these Bullesye opals I bought in turquoise, soft blue, lime green and vanilla. I have mixed them with transparent blues, turquoise and greens to create these dishes. There are two sushi dishes, both starring on http://www.glassprimitif.etsy.com and a larger glass dish that I don't want to part with yet as I like it so much. I'm going to order some more opals from Warm-glass in funky colours.