You've got the gist of the game. It's a remake of a traditional robot chase game from the 1970s or 1980s. Get all the robots on each level to destroy themselves, teleporting only when necessary to survive. Once all the robots are trashed, you go on to another level with more robots. Eventually you will die, in true 1980s game style. The doors and terminals are for decoration only.
I've tried other palettes but settled on this one (with a red background instead of the usual black) as I find it a bit more attractive than the default black/white/cyan/magenta. The Barren Planet or Team Droid palettes would be better but I'm trying to use a different palette for each game I release. There's always the monochrome option if you don't like the colours :-)