In 1992, Hana Librová conducted in-depth interviews with Czech households that were typical for environment-friendly patterns in their consumption. They – she called them “the Colourful” – shared some features with the Western “voluntary simplifiers”; however, they did not identify with either the simplicity or the environmental movements. What makes Librová’s research exceptional in an international context is that she developed it into a longitudinal one with two other stages in 2002 and 2015. In 2015, we joined her effort and broadened the scope of the research. We decided to deal with the social reproduction of lifestyles in those families and compare her sample with new forms of similar pro-environmental lifestyles that have emerged since the 1990s. Now the time has come to think through the design of the fourth wave of Librová’s research. In our paper, we would like to present our findings, share thoughts on potential ways to use the opportunities posed by this unique three-decades-long study and discuss which problems would be worth focusing on this time. How did the lifestyle of “the Colourful” and their children further evolve? How is it affected by ageing and how is it passed on? How does it relate to existing research on Czech and European pro-environmental lifestyles and trends in sustainable consumption?