* Alpha Crucis (Acrux): A double star, the brighter component is white and the fainter one is blue.
* Beta Crucis (Mimosa): A blue-white supergiant.
* Gamma Crucis (Gacrux): A red giant, but it's much fainter than the other three.
* Delta Crucis: A white dwarf.
The fifth star, often included in the Southern Cross, Epsilon Crucis, is also white.
While you might see them as all white, it's worth noting that the brightest stars in the constellation are actually quite blue-white in color.