I finally found some time to edit the Ajinomoto stadium.
Humberto, i tried your original version of the stadium and it didn't have the big light bug in the box on the left side of the pitch but it also has the smaller light bug on the sidline near the far post corner flag on the right side of the pitch.
I managed to erase the big light bug, it certainly came from an object i appended, don't know exactly which one but its gone after restarting from the begining and avoiding to append suspicious objects. But i couldn't erase the smaller light bug. I searched for green/white lights as you said but couldn't find any.
Here is my edited version, its not much, some duplicated adboards, a few tournament dressing and color in the stands and home and away banners but it adds some life to the grey concrete
MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.
www.mediafire.com
and banners for FC TOKYO (not sure the japanese writings on the large banner really means something, i did it with the help of an online translator
)