thats the problem Bulldog everyone calls everything the same thing without knowing exactly which line it is...

Way back in the day there were 3 lines...and there still basically are there was Gregs F1 line that was referred to as the yellow ghosts,Mark Bells line which was the butterscotch ghosts which over time has been called yellow and NERDs Green ghost line which is the same as the orange ghost which seems to be the choice of almost everyone out there to call there ghost wether it actually is or not..

The Bell line and NERDs line are compatible,but they arent compatible with grazianis line and the citrus is something pretty new and isnt compatible with the other 3 lines

Now as far as the Blue goes...that just looks like a butterscotch jsut a lil on the dark side is all

another Big problem comes with compatiblilty issues is that EVERY freaking new hypo that gets imported gets sold as an Orange ghost,and there is no way of knowing wether or not those are going to be compatible with any of the other lines without breeding to see...But as long you stay with one of the lines that you know is compatible there really isnt much of a problem