Spyrius are the bad guys. Specifically they spy on the other themes and when they're not doing that, they steel technology. So of all the factions to build recolours for, Spyrius makes the most sense.
Spyrius has an interesting colour palette in so much as 3 different trans clear colours feature across the theme. Red, Blue and Neon Lime. I also found it a little odd that the Robo Guardian contains dark grey bricks, something not seen in the rest of the range as far as I can tell. I'm not deliberately going to include this colour in any recolour but the option is there if I really need it.
1714: Surveillance Scooter
6835: Saucer Scout
6889: Recon Robot
6939: Saucer Centurion
6949: Robo-Guardian
6959 Lunar Launch Site
Ice Planet recolours
Alien Conquest recolours
With Spyrius primarily focusing on stealing tech, then they need some sort of vehicles to kidnap Lego Minifigs who hold information. No better sets to do this than the Alien Conquest range.
