Color-magnitude diagrams in Gaia, 2MASS, and Johnson photometry for the Ru147 member stars, both observed in K2 (green) and not (gray). Main sequence stars, photometric binaries, the turnoff, giant branch, and also blue stragglers are clearly distinguishable. PARSEC and YaPSI isochrones for 3.0 Gyr are overplotted for comparison. Agreement is largely better than satisfactory, especially in the (most comprehensive) Gaia CMD. The stellar samples differ in each panel because of varying levels of completeness in the member photometry for the relevant color. The (relatively large) uncertainties in B-V photometry are suppressed for visibility reasons. The individual stellar positions in the Gaia CMD are distance-corrected using the Gaia parallaxes; reddening and extinction-corrected uniformly with E_{GBP − GRP} = 0.1 mag and A_G = 0.2 mag, in preference to the Gaia reddening and extinction values. (For additional corrections, see text.) The PARSEC isochrones use the Gaia colors provided within the isochrones; for the YaPSI isochrones we use our empirical color transformation from B − V. This causes the redward displacement of the giant branch in the YaPSI isochrones, because our transformation is not valid on the giant branch and tends to over-redden the Gaia colors (cf. the encircled region in Fig. A.1).