They say there's a ghostin the decaying house over the bend. --> pale color
One of two, I heard, in fact --> one of two twins.
I heard it roams the cold house, darkness creeping in shadowed wings. --> Currently roaming the Edge ("Cold house") with Mesec, who is the son of the Moon Goddess, with "shadowed wings"; The darkness could also be the little black dragon that she can summon from time to time.