in the end, i can't see the areas that were repaired and am very pleased with the product.
mixing colors: i took the green bottle that i knew i would never use and dumped it out and rinsed it clean. i then used this as a mixing bottle as i could easily cap it back up when i was done to save for future touch ups.
color matching: don't bother trying to apply your test mixes to an hidden area on your leather. after mixing the colors in the bottle you used in the above tip and shaking it for several seconds, look at the inside of the cap and compare it 