Absolute visual magnitudes, H_V, vs. B – R colors for Centaur (cyan circles), classical (red squares), Plutino (yellow upward triangles), scattered (blue downward triangles), and non-Plutino resonant (green diamonds) objects. Objects with H_V > 7.0 are bimodal at the 99.96% confidence level. Objects with H_V < 6.0 are bimodal at the 96% confidence level. Objects with 6.0 ≤ H_V ≤ 7.0 exhibit a continuum of colors.