Sorry 2sweet, for hijacking your thread!
You mean light green pants? With any green, it's best not to wear much else of the color. With light green, the goal should be to bring attention to the face. Unless you favor extremes such as pink hair, again consider the boldly colored or patterned shirt. But too much pink, pale blue, or some other feminine color in the shirt can combine with the light green to form an effeminate look. Mostly purple is an example of something that ought to work for anyone. Yellow on a dark blue background is another possibility.