Update time. I've scanned every instance of Shysa appearing in Marvel Star Wars -- mostly #68, some from #s 100, 101, and 107, and one from #99. The variation is rather annoying. Even from panel to panel in a single issue. Not ot mention the colouring matter. I've scanned Boba from the ESB adaptation, and need to get them cleaned up and upladed to show in comparison. He's got the same "all-green-with-white-cheeks" scheme seen in the flashback in #68 -- it wasn't a change in uniform colours from one time period to the next, just inaccuracy/inadequacy of early '80s comics technology.
A reminder, dragged back up from page three of this thread.
Cover:

Two-page flashback splash panel:

Actual photo reference for the above:

Okay, here we go with #68...
First clear appearance (he was a silhouette in the previous couple panels):

Then we get a close-up:

'Nother action shot. Note the different blasters now:

Taking out one of the slavers. Different blasters again, and note how much higher the missile is on his rocketpack in this panel. Also, the slaver seems to have this artist's version of Mando gloves, gauntlets, and shoulder armour. Another example of Mandos preying on Mandos?

Disabling the slaver's control box. Different blasters again. Note the plasma cutter/mini-lightsaber:

I wonder how it might have affected the EU if Leia hadn't kept Fenn from getting slightly dead just now. His rangefinder also seems to have the same problem Boba's did in ROTJ

:

He's actually giving Leia's blaster back to her after taking out a baddie who jumped her:

Not a lot here, but I'm including everything. He finds out she's mad at him because she thinks he's Boba:

So he introduces himself and shucks the lid:

And lets Leia know she's "invited" back to their camp:

Gonna break it here, and do the rest of #68 in the next post.
--Jonah