Welcome to the finals of the 43rd Stare Out Tournament. Press Esc to start.
I think you can't do this .
The Green 3 can act as a value 0,1 or 2 of any other color.(not green)
While the English rules says 'any other color', in the original German it's just 'einer beliebigen Farbe' or 'any color'. Here's the official clarification.
The only restriction is, that you can't use two Greens to recruit another color. One of the recruiters have to be from the same color.