but as ive found out a good range of all paints is worth it, you ofc can mix your own, but there are some unique colours that you should get, gw's excellent bleached bone, vallejo's florescent colours , the strong red from khador base red (p3)
i include links to provide examples of paints i've bought / used over the years , though watch out for colour party paints there gooey n awful in my experience