That's the new challenge at Split Coast Stampers Free 4 All #294 and I have the perfect card for this challenge.
I have actually used a variegated thread but I'm sure it still qualifies
Thread: House of Embroidery Violet no 14
Gold: DMC E436
Glitzin' Glamour Crystalina
Card stock: 160gsm in white
Gingham Paper: Activity village