GENERAL KNOWLEDGE: Which painter gave his name to a shade of red?

Questions

Which one word describes all of the following, a type of sandpiper, an Elizabethan collar and to trump at cards?

Which common substance is obtained by boiling down horns, hides and hoofs?

Who won best actor Oscar in 1989 for My left Foot?

If your face was rugose, what would it be?

What type of music is produced by French speaking settlers of Louisiana?