Reddening-related aspects of Ru147. Top: color-magnitude-diagrams for all K2 C07 objects (pale symbols); (a) only distance corrected according to their parallax and (b) additionally corrected for both distance and reddening according to Gaia DR2 (Apsis). The gray symbols refer to the subset of stars with reddening parameters provided, and red to those without. Ru147 members (green for stars with reddening parameter, yellow for those without) are superimposed in both panels a and b, the latter corrected for reddening E_{GBP − GRP} according to Gaia DR2. A PARSEC isochrone for 3 Gyr is overplotted. Bottom: the panels show that while the reddening values are greatly divergent (c), there is a strong (and unsurprising) correlation between reddening and extinction (d). The ratio between E_{GBP − GRP} and A_G allows us to set A_G for Ru147 based on our E_{GBP − GRP} estimate. This is indicated by the red lines in panel d.