Two different colored eyes?

Kate

Hello! So my son is 7 weeks old today and his eyes have been two different colors for about 5 weeks. One is a blue and the other is mostly brown. I am aware that eyes can change up to 9 months after they are born, but I'm curious to know if they will stay two colors. His blue one doesn't show signs of getting darker to me. To me, the blue one looks lighter. Has anyone else had a baby with two different colored eyes and they changed to one color? Or they possibly stayed two colors?