Line a 23 x 33cm baking tray with baking parchment. Melt the white chocolate in a heatproof bowl over a pan of simmering water, making sure the bowl doesn’t touch the water, or microwave in 5-second bursts until smooth. Stir through the orange food colouring and set aside.

In a separate bowl, melt the dark chocolate using the same method, then mix in the black colouring.

Pour the melted orange coloured chocolate into the lined tray and spread to the sides to an even layer. Drizzle over the black coloured chocolate and swirl it with the end of a skewer to make a pattern. Evenly sprinkle over the coloured sweets and edible eyes. Chill for 1-2 hrs until set, then break into shards. Will keep for up to two weeks in an airtight container.