- Rainbow Colour Happy Birthday Balloons by Talking Tables. Pack of 5 latex balloons with printed 'Happy Birthday' design. These colourful balloons can be filled with air or helium. The perfect party decoration for a brightly coloured birthday party or kids rainbow themed party. Also includes paper ribbon that can be attached to each balloon. Pair with our 'Rainbow Brights' range for matching party decorations, tableware and supplies. Size: 30cm (12in), 3m paper ribbon.