Once transported to Kun Lun, the red stone is located directly to your left.
Collect the red powder from the stone and travel southeast along the golden walkway to a set of stairs leading down. Follow the chain to the platform of pools. The orange stone (568,528) located at the bottom pool.
Travel west to the wooden platform. There is a chain at the northwest end leading to the Yellow stone (511, 526).
Travel north east from the stone across the lava platform. Cross the chain to the stone platform. The Green stone is in the northwestern corner (485,480).
Along the northern rim, there are some stepping stones a hop away. Hop along to a complete path of stepping stones. Travel along this path. You will pass two stone platforms before coming to the blue stone (386,446). It is just two stepping stones off of the path after the second platform. You will have to jump to get to it.
After, you will travel north up the path for a while until the path bend back east. Begin jumping from stone to stone northwesterly to the indigo stone (301,361).
Travel east, hopping from stone to stone until the path resumes. Take the path along its north/northeastern route. You will come to a platform (254,243), at the northern rim you will need to find the stones to jump to to get to the final stone. Jump until you find another path and follow it north. You should see the purple stone to the right of the path (154,125).
Now you can make the rainbow powder.






