ESP - Constructor
Like Spain's "Base Espacial" (Space Base) manufactured by Nacoral "Constructor" comes with many color variations which can make a complete collection tricky.
To try to decode these variations I pulled photos for every set I could find then determined what was available in each. Below are photos of the different vehicles and accessory colors and a table that shows the sets side-by-side for comparison. Magically and unlike the Base Espacial set, in only 4 examples I found two that were identical. But, as it seems is typical for the Spanish sets, months later I found another set that introduced two new color combination vehicles. This may never truly be complete. One of my favorite aspects of this set is that it has the only non-Space walking Billy prior to the Snowmobile set in 1970/71. Bravo Spain!
Besides the helmet, the rest of the accessories seem to be consistent in color.
Set Comparison Table
I made this table to see if there was any consistency at all to these sets and unlike the Base Espacial sets there are two sets that are identical in only 4 total.