Mesh goes dark blue after applying auto smooth, happens when i flip normals Basically i need to flip normals to add solidify modifier(or else it solidifies outside when I need it to solidify inside of the mesh(car fender panel).
But when I do, the mesh of the fender panel changes color to darker blue when I apply or keep autosmooth enabled....
I have gotten this usually bypassed by unenabling autosmooth, doing what I need and reapplying autosmooth when I am done, but this tactic dosent work whit Flip normals....


Will this affect my model when I am done whit it and exported to .dae?
You don't need to Flip Normal Directions, you can just adjust Offset in Solidify modifier tab. This method will allow you too choose which side you want to "extrude" or you can even have it in the middle (0 value).

Also you can check Flip Normals in Solidify modifier options, if you by mistake have flipped normals - this one will help you to make them right.