Answer:
The Moderntone pattern was produced in transparent colors as well as the opaque platonite colors. In the transparent colors, there was Clear, Pink (hard to find), limited green pieces, and the most found in Ritz Blue (also called cobalt blue).
In the platonite, fired on colors were gray, green, chartreuse, pink, white, black, yellow, pastel green and a bright red.
More information is found on the Hazel Atlas Glass collectors website.