AI made SMBC and colored deep black, let it rest in the fridge to get the color I needed but now that I want to use it the color is separating from the BC, is it salvageble? How can I fix it? TIA

AHave you let the SMBC come back to room temp? Have you rewhipped it? Does it look like water leaking from it?

I'm assuming you have tried to use it when it hasn't quite got to the ideal temp which has made it split. All you need to do if this is the case is gently heat it whilst whipping it. You can either microwave for 5 seconds at a time and keep whipping it in between or, put it on a Bain Marie and whip it whilst it is heated.

Or  aim a blow dryer at the bowl from a foot or two away while mixing slowly (so it doesn't platter around).  

When starting to soften and come together, turn off the dryer and whip it up at higher speed.

AThank you, thank you, thank you