Blues, greens, purples—happy cool colors that will work with lots of different fabrics.
I like Efina from Wonderfil a lot. I'm using it for hand piecing right now, but it's also a wonderful option for hand appliqué.
Efina was developed for hand appliqué. It is a 60wt 2-ply 100% Egyptian Cotton, made exclusively from the highest calibre extra-long staple Egyptian Cotton. Efina is strong thread that is uniform in diameter (no lumps or bumps) with a visible twist.
You might want to add Parchment, an off-white not included in this set.
Efina colors included in this Cool Bundle: Cloud (20), Turquoise (8), Peridot (14), Avocado (12), Powder Blue (54), Lavender (58).