Coating the back of the buttons with Versamark ink, dipping them in embossing powder and heating them with my heat gun worked like a dream.
You could achieve the same effect with glitter glue but this was super quick to do - just let the melted embossing powder cool for a couple of minutes before touching the button.
|Versamark Ink and Kaleidoscope Embossing Powder is a quick and easy way to add sparkle to clear buttons!|
(I use an old chopping board covered in aluminium foil to protect my work surface)
You could even try adding a multi-colour design with your pens ... or an initial (just remember to use a mirror image if adding it to the back of the button!)