the cup was one of my more recent purchases ,i got it in a package deal so i dont know much about them. it really has very light green tint to it. it looks the same as when i bought it. i have under 2(150)watt 15k mh and 2 (130)watt dual actinics.I know this is the wrong forum i will post pics in the lps section and see if any one can help me as far as th coloring goes thanks for compliments.