Bulgaria are getting about 30 aren't they?
I think the plan livery wise is any of the 87s that could do with a repaint will be getting the yellow and green, the ex Virgin liveried locos being a prime example. All other 87s in good external condition (FGBRf, Costwold Rail livery etc.) are staying as they are, just rebranding.
Will be sad to see them go, but it's in their best interest.
Now then, who wants to go to Bulgaria once they all settle in?