<i>I know how big stars end with a big bang. However, do really large stars and really small stars (red dwarfs) have the same types of layers?</i><br /><br />Stars more massive than ~0.4-5 solar masses are separated into a convective and radiative zone, so with increasingly larger main-sequence stars, there probably wouldn't be much of a difference in their inner layering. The only thing worth mentioning is that the radiative and convective zones in stars of more than a few solar masses are "reversed" relative the Sun; that is, their convective zone is in their core, and their radiative zone extends to the surface.<br /><br /><i>Would either swell or go through a similar color change during the life span? (I was thinking more relative to the average color put out throughout the star's life. A red dwarf would presumably only put out reds, but those reds would change.)</i> <br /><br />For most stars excluding red dwarfs, they would indeed go through stages similar to the Sun's, albeit at vastly different luminosities. However, the most massive stars--the "hypergiants"--will probably not get far enough to ever become orange or red supergiants, and will most likely explode before evolving that far; I'm thinking of Wolf-Rayet stars in particular.<br /><br />Believe it or not, red dwarfs will have a unique evolution from every other star type. As mentioned earlier, stars below a certain mass are fully convective. That means that their cores have access to all the hydrogen in their mass; given their low fusion rate, they have extremely long lifetimes.<br /><br />Non-red dwarf stars go through a giant and supergiant phase because they *don't* have access to all their hydrogen fuel; it's all a matter of the core trying to find new ways to acheive hydrostatic equilibrium. Hence, fully-convective red dwarfs will never become red giants or planetary nebulae; they will simply become hotter and smaller with time as they use up their hydrogen, until they become white dwarfs.