Melt the white chocolate in a double boiler. Mix in little drops of food colour. Grab a fork and very carefully mix in the colour - you really don't want to overmix the colors though, otherwise you will end up with only one colour.
Now take one apple after the other and dip into the chocolate while turning so the apple gets a nice even chocolate coat.
If you wish dip the bottom part of the apple into cocoa nibs and place on a board or plate to set. Add some edible glitter for real galaxy look. Have a wonderful Halloween everyone!