In the older builds, Durantium, Elerium and Antimatter had their own colours - Thulium and Promethion too - in the latest Opt-In all these have been changed to white symbols on the galactic map rather than the colors they used to be before.
To be honest, it's now harder to identify things on the map and it feels "cluttered" too look at on a glance, would it be possible to bring the old colors back again please?