I use a lipliner that is no more than one shade darker than my natural lip, no matter what color of lipstick I am using. The reason for this is because it is much easier to fix mistakes with a more nude liner, and if my lipstick comes off, I don't have this dark line around lighter lips. That may have been a popular trend in the 80s, but it's not now.
I may go one shade lighter in the summer, but in general, I stick with a liner that is very close to the shade of my natural lip. My two favorites are the Rimmel lipliners in Wild Clover and Spice. I also venture to a pinker liner by Maybelline, but the Rimmel liners are my go-to products.