LEGO released the first recolor of their Classic Space minifigure in 2014. The LEGO Ideas Exo Suit set contained two Classic Space minifigs in green, but they had modern visored motorcycle helmets and more detailed heads.
Since then LEGO has issued recolors of Classic Space torsos (if not entire minifigures) in gray, pink, orange, purple, and brown, but it wasn't until 2019 that LEGO created a modern version of the original Classic Space helmet (initially in white, pink, and yellow) for the Benny's Space Squad set.
Ten years after the Exo Suit, LEGO finally issued a green recolor of this helmet in the Monkie Kid Megapolis City set. I wasn't going to buy four copies of this large set, but I did order four helmets from BrickLink. Now I can finally evolve my four green Exo Suit minifigs to their final form.
Last Fall I did something similar to build purple Classic Space minifigs.