I used my original swiss roll recipe for this and just changed the colours and filling.
For the orange and black one I piped circles onto the baking sheet like a chequered board and then dragged a toothpick through the two colours to create the pattern.
The other was just strips of colours.
The chocolate orange filling was chocolate Whipped Cream frosting with orange juice & zest through.
120g whipping cream
100g powdered sugar
75 g cocoa powder
1 tsp vanilla essence
1 orange zested and juiced.
They do create a lovely bright addition to your halloween table.