Bali Kratom comes from Bali, Indonesia where there is a large Kratom plantation that produces almost all of the Bali on the market (along with a few other strains). Indo Kratom usually comes from different areas in Indonesia (from either small farms or just wild-crafted). The color can be affected by a few factors including the age of the leaves, the season, how much stem material remains in the product, how it is dried, and if its picked from the tree or off the ground (think deader/browner leaves). www.entheofarm.com is where I purchase mine from and they have very good descriptions on their products that help people tell the differences between the different varieties. Even other confusing things like Super vs. Premium kratom is explained by reading through their products.