The Aurora Collection is an additional eight Origin stages in the same vein as Color Charge from the daily challenges. They are short challenges, with the longest one brushing against three minutes.
Difficulty-wise, it's between Medium and Hard Color Charge from the daily challenge, so practice there before buying this DLC. The real enemy is the short timer on certain challenges, so you'll always want to keep your mouse/hand moving. Don't bother rotating the puzzle, as it'll only slow you down.