John Byrne's X-Men portfolio

I came across these scans of the 1993 X-Men portfolio by John Byrne. Byrne recreated some of the more classic scenes from his run during the late 70s and early 80s. They're absolutely beautiful. If I'm not mistaken, the original portfolio was in black and white while these images were obviously coloured...

Storm, Wolverine, and Nightcrawler facing off against Proteus circa Uncanny X-Men #127.

Cyclops battling Shaman's magic box conjurations with Sasquatch, Northstar, and Aurora waiting in the wings, circa Uncanny X-Men #121.

Kitty Pryde on her own trying to stay alive as a N'gari demon tears the mansion apart, 

Uncanny X-Men #143.

Jean Grey's death scene with a horrified Cyclops helplessly witnessing, Uncanny X-Men #137.