Frankly speaking, I can't tell the differences among the valks in the anime in my first run. Many people have the same problem.
We don't know there's a VF-0D, the color of Shin's 0A, also in MF, some people don't notice the VF-171 too; they think it's VF-25F with new weapons.
BTW, that is the true CF scheme for VF-0A?