Since the drop rate are rather common knowledge I would like to how much less drops do you get when mobs are either green, light blue and dark blue to you?
Does it go just by the color of the level difference as well?
Dark Blue is pretty significant... that said, one of the best drops I've ever had was from a Dark Blue mob that I killed outside of Giran one day entirely on a lark, back when what is now the arena was populated by a bunch of skeletons.
Light Blue seems to be a reduction of about 25% or so, given the frequency that I still get mat and adena drops fairly often.
As far as solid numbers go, like Light Blue= 25% less, Dark Blue within 20 levels is 50%, More than 20 is 80%, etc. I don't know.
If I remember correctly from old PTS calculations and experimentations, light blue and dark blue are 1/4 drop rates. So on a previous pts where drop rates were x5, you'd get 5/4 drop rates on dark blue mobs, so SB hunting was still possible :)