Why some colors are different and some parts of body doesn’t appear?
When I want to put model into Unity, I simply copy blend file and paste it into assets in unity. So, what’s wrong?
There are serveral things that could go wrong when importing blender models into unity. I’ve also experinced a lot of trouble when trying to do so!
I’m not sure what your problem is, but try to check the following things when importing a model into unity (just try it again after you’ve checked all of these):
if the model has textures, make sure it’s properly uv-mapped.
if the model misses parts, try to flip normals in blender.
check the unity import settings! make sure you understand every option and know what is does. Changing a thing (like import materials or not) can make a big difference.
And some tips:
using a .blend file to directly import models is fine, i do that too, so don’t worry about that.
try to assign materials in unity. importing materials out of blender caused me some trouble a lot of times. (this could also be the solution to your weird “suddenly changed colour” problem!)