Gas giant classes: 1. Cryoazurian (#a7cbd9): 0-90 Kelvin. No tropospheric clouds and only faint hazes. Dull blue in color, occasionally with hints of cyan from hydrocarbon hazes in the upper atmosphere. 2. Frigidian (#dae2f2): 5-20 Kelvin. Extremely cold hydrogen clouds only capable of forming on worlds that are far from any stars. White clouds with hints of grey and blue. 3. Neonean (#f2dfe8): 15-35 Kelvin. Very cold neon clouds. 4. Borean (#f2daf1, #e5daf2, #f8cbbd): 35-60 Kelvin. Clouds of nitrogen, carbon monoxide, or more rarely oxygen. Various colors, typically pale pink or purple, although reds, oranges, or browns may occur from discoloration from organic hazes. 5. Methanean (#cfe9f4): 60-90 Kelvin. Clouds of methane, ethane, and occasionally argon. Usually accompanied by moderate amounts of organic haze. Light blue to turquoise in color, but can become more of a dull green or even bronze from extensive haze. 6. Mesoazurian (#81d4c4): 90-550 Kelvin. Uncommon clarified atmospheres. Usually teal or green in color as a result of heavy discoloring by organic and sulfur hazes. 7. Tholian (#f9be5d, #f3e186, #f09a4a, #874226): 60-550 Kelvin. Various organic hazes that obstruct the surface and any clouds below. Various colors, but usually pale yellow, orange or brown.

Sulfanian (Give hex colors): 80-180 Kelvin. Sulfur enriched ammonian worlds. Clouds of hydrogen sulfide and ammonium hydrosulfide, with lesser amounts of ammonia, hydrogen chloride, sulfur dioxide, and organic hazes. Dull yellow, orange, or gold in color.