"The above is just a simple guide for matching up the weapons to figures however as you will see due to the length of time the Rebel Blaster was in production and the range of figures that it accompanied meant that a number of sculpt and colour variations were produced which this page has catalogued."
key points: simple guide, colour variations were produced.
It looks like it was available green/black, light blue, dark blue & blue/black. Probably more options as the figure was produced for over 5 years on dozens of different cardbacks.