Mens viridis.
But, if I may ask, why would you want to?
There are several ways of saying green light; one would be: lux prasina
Prasinus.
Man of Light in latin is "Luce"
Presinus
eengray
Monstrum viridis.
'Go'.
viridi contrarium (I think)
ex lucis ad lucem (possibly)
"To search for the light" is "Quaere lumen" or "Quaere lucem".
Lux immortalis es.
In Latin you could say specula lucis, or pharus, or ignis.
To say the words light green in Maori you say marama matomato. In the French language these words are said as vert clair.
To say the words light green in Maori you say marama matomato. In the French language these words are said as vert clair.