How many primers annulus colors were there when the color of the bullet tip was white?
CREATE TABLE "headstamps_and_colour_coding" (
  "headstamp_id" text,
  "primer_annulus_color" text,
  "bullet_tip_color" text,
  "other_features" text,
  "functional_type" text
);
SELECT COUNT("primer_annulus_color") FROM "headstamps_and_colour_coding" WHERE "bullet_tip_color"='White';