names of traits to be mixed are given as strings in a List

I have something like this:

trait Color {
  def myname: String = ""
}

trait White extends Color {
  override def myname = super.myname + " white "
}

trait Green extends Color {
  override def myname = super.myname + " green "
}

trait Yellow extends Color {
  override def myname = super.myname + " yellow "
}

object TestA {

  val traitnames: List[String] = List("White", "Green", "Yellow")

  def main(args: Array[String]) {

    class Colors extends White with Green with Yellow
    val c = new Colors

    println(c.myname)

  }
}

Is there a way how I can use the names from the List traitnames to mix traits in a class, let say, Colors - like is shown in the main method here - instead of writing the mixin statement manually?