Could it be bun bo hue? If so, here is a link for a recipe using annatto oil. If you do a google search using bun bo hue annatto, you'll get more recipes.
Rose-Marie

Here is a link that might be useful: Bun Bo Hue

You are right Rose Marie. I called a friend of mine late last night, & he told me Que was the South Vietnamese name, & Hue was a northern name, or something like that. It is a famous spicy beef noodle soup, named after the city of Hue (Vietnam) - known for its spicy cuisine. Anyway, thanks for the link & search tips  they guide me to exactly what I am searching for. I am trying to come up with a mainstream vegetarian version, which should be a challenge. That annatto oil sure does give a nice color & taste to soups  all without meat.