Line a large baking sheet with parchment paper.
Unwrap the assorted candy bars, and chop them coarsely. Set aside.
Place the chocolate almond bark in a large microwave safe bowl.
Microwave the chocolate almond bark at 30-second intervals until melted and smooth.
Spread the chocolate onto the parchment paper in a thin, even layer.
Pour half of each bag of Wilton melts into separate small microwave safe bowls. Half a bag of green melts in one bowl, half a bag of orange melts in another bowl, and half a bag of purple melts in a third bowl.
Microwave each color of Wilton melts for 30 seconds to start.
Stir, then continue microwaving at 15-second intervals until each is melted and smooth.
Drizzle the different Wilton colors over the chocolate almond bark, and then use a knife to swirl them together.
Sprinkle the chopped candy bars evenly over the chocolate.
Allow to set completely, and break into pieces.