Top panel: distribution of Li EW versus V−K_s color in three color ranges: 0.5 < V−K_s < 3.4 mag (19 stars), 3.4 < V−K_s < 4.5 mag (21 stars), and 5.4 < V−K_s < 5.9 mag (6 stars) of β Pictoris members with known rotation period and with overplotted (solid lines) the linear fits. Middle panel: residuals from the fit with horizontal dotted lines indicating the amplitude of dispersion. Bottom panels: distribution of Li EW residuals versus rotation period in the three color ranges. Solid lines are linear fits, r is the Pearson linear correlation coefficient and α the significance level.