Trying to grow lilacs from seed

Just a little project I'm trying I'll see how they do. The lilac bushes are full of seeds this year I thought I would see how I do. They are soaking in water right now. You are to soak them for a day then pit them in soil in an air tight bag and place them in the refrigerator for two months to trick them into thinking it's winter. That's as far as I have gotten. It will be interesting I'll plant them at our new house when we get it. I have three different kinds light purple, dark purple and white. I'm excited about doing it. I have about 3 or 4 seeds from each but I don't have them marked which is which. That wasn't very bright of me. It will be a mixture.