Alright, I'll go with that, then. ^^ As for what the lights and sounds are...  Hmm.  I'm thinking the noise from the Haunted flaw can be a number of faint cries that occasionally spring up, like the sound of people being tortured in some far-off, echo-y cavern.  As for the light from Phantom Spark...  Sparks and little jets of flame that course over her body at random seem like a good idea.  They'd be all light and no temperature, of course.