Hmmmm, not quite sure. On same-day pulls, I like the color and dryness the spice comes out after washing.
After letting the Naptha sit, overnight in the solution, it comes out more yellow. Is this worse spice? Better? Same? I'm not sure, but check out the link above to Burnt's thread on different colors.
Typically,
do regular pulls same day = white spice
Then smaller pull (single) done with poured off Naptha next day, sometimes 2 days later. Naptha seems to get to a apple-juice-yellow. Washing the yellow Naptha seems to drastically decrease yield, but change color to more white.
Last time, used the poured off Naptha from the white snow globes (freeze). Heated it up to very hot, as well as the jar of basified solution. Rolled Naptha every ten minutes or so for about an hour. In between rolls, put jar into hot bath to keep temp up. Naptha became that apple juice color. didn't wash this time. did series of evap, freeze, evap, freeze, complete evap (no real reason for this series, couldn't make up my mind). Made for an abundance of yellow spice.
Both smell wonderful.
As for trip. Really hard to say. My pipe is so full of resin, I could probably resin hit it and break through. It's not really good for testing different color spice