The Extended Zodiac signs were ripped by celeri from Hiveswap's website for use in the game. They can be loaded in with the Symbol loader feature by clicking the button and navigating to the file containing them, which you'll want to put in The Genesis Project_Data/StreamingAssets
Download them here:
Rust Signs --- Bronze Signs --- Gold Signs --- Lime Signs
Olive Signs --- Jade Signs --- Teal Signs --- Blue Signs
Indigo Signs --- Purple Signs --- Violet Signs --- Fuchsia Signs