For red-and-white-striped truffles, use white chocolate instead of semisweet chocolate for the coating and skip the crumb topping. Tint remaining coating (left over from dipping the balls) with red gel food coloring, warm it gently, and drizzle over the chilled balls.
For brown-and-white-striped truffles, skip the crumb topping, and drizzle chilled balls with melted white chocolate.
The nutrition data for this recipe includes the full amount of the chocolate coating. The actual amount consumed will vary.