These are the default chains that come with the cutie mark charms:
Applejack- Orange Chain
Fluttershy- Light Pink Chain
Rarity- Dark Purple Chain
Twilight Sparkle- Dark Blue Chain
Rainbow Dash- White Chain
Pinkie Pie- Medium Pink Chain
Big Macintosh- Orange Chain
Princess Luna- Dark Blue Chain
Princess Celestia- Gold Chain
DJ Pon-3/Vinyl Scratch- Teal Chain
Octavia- Silver Chain
Derpy Hooves- Silver Chain
Shadowbolts- Black Chain
Wonderbolts- Teal Chain
Spitfire- Orange Chain
Princess Cadence- Dark Purple Chain
Shining Armor- Blue Chain
Cutie Mark Crusaders- Red Chain
The Great and Powerful Trixie- Light Blue Chain
Fausticorn (the ponification of the wonderful Lauren Faust)- Red Chain
Lyra- Malachite Green Chain
Bon Bon- Dark Blue Chain
Discord- Red Chain
Dr. Hooves- Bronze Chain
Zap Apple- Red Chain
Cheerilee- Medium Pink Chain
Queen Chrysalis- Malachite Green Chain
Nurse Redheart- White Chain