How does my therapist make me talk about all the trauma I’ve gone through when we always start out coloring? What sorcery do therapists have??

✨ magic✨

The actual psychology behind it is your brain is in concentration mode, it detaches from the overwhelming thoughts to focus on the colouring, leaving you disarmed. It's easier to engage in otherwise distressing memories when you're in a playful state

Something like coloring can work to take one to a childhood like state. With some it's easier to talk about trauma.

It's nice that he knows how to open you for dialog.