This stuff used to look like small garden worms covered in dust and wrapped in a silver packets for kids to enjoy. What goes through a sweet designers head I don't know.
" I've got one to tempt the kids away from Texan Bars, Bazooka Bubblegum and Curly Whirlies... it's called Spanish Gold, it looks like floor sweepings and tastes like sugar...cheap to make and will sell by the bucket load"
And Space Dust!! I tried it on my Grandad once and it bloody scared him, he thought his head was exploding, he said it was like an iceberg cracking behind his eyes.