Flux distribution for the RGB model with T_eff = 4476 K and log g = 1.2 for the reference mixture (black) and the CNONa1 mixture (red), both with the standard helium content of Y = 0.246. We superimposed the transmission curves for the Johnson-Cousins U, B, V, and I filters (thin, black lines; left to right) and for the Strögren uvby filtes (grey-shaded regions). The synthetic spectra are broadened by convolution with a Gaussian of FWHM = 1700 km s^-1 for readability purposes to roughly match the resolution of the Castelli & Kurucz (2004) ATLAS9-based fluxes. A number of molecular bands, which vary significantly between the two mixtures, are labelled by the name of the corresponding molecule.