Yellow Triangles Party Range is Perfect for a summery birthday party, a wedding, a circus party, or a Lion King party! Perfcet for a Wild West Party.There are no cowboys without indians. Think bows, arrows and feathers versus lassos, pistols and cowboy hats. Fight between cowboys and indians, They're historical. So why not organise a birthday party with this theme, creating the perfect excuse for children to play games in teams. My Little Day Trends Yellow Triangle Partyware for All Ages and All Occasions.