Lacaillan
From Tardis Wiki, the free Doctor Who reference
The Lacaillans were blue humanoids with white hair, slender fingers, and delicate heads. Lacaillans "come in pairs." (PROSE: Return of the Living Dad)
Lacaillans had long legs and were noted for their grace. Apparently it rained all the time on the Lacaillan homeworld. (PROSE: So Vile a Sin)
Lacaillans were one of the species that lived on Ha'olam. Other species on that world sometimes dyed their hair white "to look fashionably alien." They believed that individuals were the sum of their possibilities, not their achievements. (PROSE: Seeing I)