71 cuda color

Found a guy tonight that has a # match 71 340 4 speed cuda that he calls sky blue, said its NOT b7,b5,or petty blue.I did not see car yet but its loaded two fender tags,billboard,fog light,rubber bumpers,ect. I never heard of that color.Any idea's on color ??? Photos of light blue cuda's would be great,Thanks

B2 maybe:

http://www.hamtramck-historical.com/paintChipCharts/_1971PaintChipCharts-01.shtml?load_img=1

B2 '71 Cuda

Thanks, thats my guess too !?! Any billboard photos out there ?