TDK 80min CDR 50 pack spindle

[Decepticon2k]

I was just wondering if there's any difference between how the 80min TDK CDRs work in the 50 pack spindle and the 20 pack with the stacking trays or in sleeves? I was just wondering because I picked up a 50 pack spindle, and noticed that when I opened it up and looked at the bottom of the cd's that they're not as darkly colored as the ones in the stacking trays. I was wondering if this in anyway affects the way they hold data or the type they can hold. Plus on the packaging it says "Data CD-R", that doesn't mean anything does it, like that it can't be used for audio or anything? Just wanna make sure before I wind up burning a few useless coasters with these. TIA