Bass have falling victim to every color and every hue of soft plastics ever created.
However, starting colors for soft plastics are as follows:
Black w/ Blue Flake
Green Pumpkin w/ Black Flake
Watermelon w/ Red Flake
From here, your collection of soft plastic colors will grow immensely over your bass fishing career.
As for Hard Bait colors:
Shad
Blue Gill
Crawfish (Brown/Red)
Again, starting point.
I hope this helps and welcome to the passion.