Integrated g − i color, in mag, as a function of absolute r-band luminosity log(L_r/L_⊙), both corrected for Galactic extinction following Schlegel et al. (1998). Nançay detections, marginals, and nondetections are represented by gray dots, open gray circles, and open red circles respectively. Arecibo detections, marginals, and nondetections are respectively represented by black solid stars, open stars, and blue downward triangles.