That's a seaclone 100 I am guessing. Don't know whether you can adjust the air mix or not with this skimmer; that could have solved the problem of light colored skimate.
Further analysis:
From the shape of the lead, I think its a generic type skimmer found in ebay:
http://www.ebay.ca/itm/PROTEIN-SKIMM...8afef59&_uhb=1
(Seaclone doesn't have the circular disk on the top of the cup).