Screamin' Green (formerly Ultra Green) is a pastel-ish neon green that was introduced in 1972 by Crayola. The color has more blue and is aside from cyan colors such as Aero Blue. In Ruscona's Colored UV Gels, the color is named "Screaming Green" with a non-pastel version of the neon gel.
Ruscona Screaming Green - #35e719
The Screamin' Green Sharpie markers next to the Laser Lemon and Blizzard Blue neon sharpies.