-axes.scatter(firstedits_male, years_ago_male, alpha=0.1, c='green', linewidths=(0,), label='Male')
-axes.scatter(firstedits_female, years_ago_female, alpha=0.1, c='orange', linewidths=(0,), label='Female')
+axes.scatter(firstedits_male, years_ago_male, alpha=0.1, c='green', edgecolors='None', label='Male')
+axes.scatter(firstedits_female, years_ago_female, alpha=0.1, c='orange', edgecolors='None', label='Female')