hair dye during pregnancy

Keri • "Happiness can be found even in the darkest of times ; if one only remembers to turn on the light"
I've read multiple articles on this topic; and every single one says something different. 
Would really love to fix these roots of mine.
Obviously my little cupcake is way more important than how I look.lol  
But it would be great if I could find a safe way to do this. Any tips?