DNA studies show they descend from Balkans and Slavs, and speak a 'Proto-Indo-European' descended dialect. The haplogroup R1a is considered an aryan haplogroup and includes the balto-slavics. They would seem to be white from a brief look at the evidence. I realize the Ashkenazim and Sephardim can have R1a, but thats from mixing with Europeans quite recently, and they have middle eastern genetic markers as well, neither of which appears to be the case with the Balto-Slavs.

What is the argument for them not being white? They seem to meet the standard qualifications for this categorization, though I am certainly no expert on Albanians in particular and could be missing something