If it WERE aspected, in 1.0 the light-aspected spells were a combination of fire, water, and wind, while dark-aspected spells were a combination of earth, water, and ice, as I recall. That said, the only time aspect of a spell matters is fire/ice for THM/BLM.

It's quite likely that spells still retain their aspects, but we can't test them currently due to all monsters having equal elemental resistances. This may turn out to be important once PVP is released, however.