Polarized color at ≈90° scattering angle and stellar luminosity in Sect. 5.3. (a), (b), and (c) are the Y, J, and H-band data in polarized light in comparison with K_s-band data in polarized light, respectively. In J – K_s comparison, increase in stellar luminosity leads to more neutral color; while the correlation is less evidence in H – K_s comparison likely due to adjacent wavelengths (e.g., Fig. A.2). Note: the bands are 1σ, 2σ, and 3σ confidence intervals from bootstrapping fit. The data used to create this figure are available at the CDS.