I have a new vent fan, but no instructions. The old van had a light and fan, and I have two wall switches for it. The new fan has a light and fan as well.
In my ceiling I have a black, white, red, and ground.
The new fan has a black, a white, a white and blue (both labeled 'light'), and a neutral.
First of all, the "neutral" that you listed for the new fan/light is NOT a neutral, it is a ground. The standard colors are:
1 - Wire nut all White neutrals together. Your existing wiring has one neutral because the fan & light are on the same circuit so they can share neutral.
2 - Wire nut Green & bare ground together.
3 - Wire nut Blacks together for fan switch.
4 - Wire nut Blue to Red for light switch.