[BLENDER] Select faces based on face orientation?

melviso

If u have a mesh that looks like this when u enable face orientation, Is there a way to select all the red faces so u can flip the normals. Maybe an addon or script that can help with selecting all red faces or faces with opposite orientation? I have tried Recalculate outside for Normals. Doesn't work for very complex meshes. I am using image for demonstration purposes. Appreciate any info anyone can share.