I’ve heard now many times on random posts admittedly on social media that if you want a mini that’s well tempered you have to ensure it’s from a good line. There are some lines known to be neurotic or anxious. What does that mean? I also heard the ‘line’ is color dependent. So for instance, someone advised me that if I wanted a calmer standard, I should look for a black one. So is there any truth to it? And if so which how do you know which lines to avoid. Are the white lines more prone to anxiety in mini’s ? Or is that all unsubstantiated?