Size–mass relation of BGGs using color-only classification. Panels show BGGs across six redshift bins from z = 0 to z = 3.7 (Δz = 0.5). Blue circles represent star-forming BGGs and red circles show quiescent BGGs, as identified using rest-frame NUV–r–J colors. The dashed and solid lines represent best-fit size–mass relations for SFGs and QGs, respectively, with shaded regions indicating 1σ uncertainties. SFGs show generally shallower slopes and larger sizes, while QGs are more compact, especially below z ∼ 2. This classification is sensitive to dust reddening and intermediate colors. Results from Faisst et al. 2017 are shown as cyan dashed-dotted (SFGs) and orange dotted (QGs) lines in matching redshift bins for comparison. While dashed lime and dashed magenta lines show van der Wel et al. 2014 results.