PowerDVD has four settings, Vivid, Theatre, Original and Bright. I never use Bright, Theatre is just duller and darker than vivid (can is sometimes too much but usually looks good) and original is very dull. I've only changed to Theatre with some King of the Hill captures because certain colour were too bright with Vivid. Vivid usually offers a more pleasing viewing experience, in fact I don't think Theatre or Original are actually "original" they just make the picture a bit dull.