Sugar and sauce sounds tasty. I’d probably just live with the darkness if the taste is on point.
Separating the sugar from the sauce would be the first step in remediating something like that. Then wash your crystals and do a recrystallization.
Clean up the color on the sauce portion separately. I’d still want to avoid etoh to do that, if possible. Then again, if you have sugar n sauce to start with, you can probably afford to lose some terps along the way.