I just edited a wedding highlights montage and I want to grade it in Color so I can learn the program a little better. I sent my sequence to Color, and I messed with "curves" in the video fx section. After messing with curves on one clip, I would move on to the next clip and notice that my work on the previous clip wasn't saved. I thought that maybe after rendering the changes would show up. I rendered the clips, saved the project and sent them back to FCP, but none of the curve changes had been saved.

Any help with this?

The Color FX room is a node based editor, which means you need to connect your effect to the output node for it to be applied to your grade.

For regular curves usage, you can just use the curves in either your primary in or primary out.

Thanks a lot Craig!

Also, I have a 4gb file, I need it to be under 500mb for Vimeo. I tried compressing it using Mpeg-Streamclip, but it ended up still being 1gb. How can I reduce the size to 500mb or below?