Cichlid Trace has a few trace elements that are not explicitly present in Cichlid Lake Salt, but unless you're starting out with RO water, these trace elements are probably present in your tap water anyway (or are provided by your substrate). Cichlid Lake Salt contains primarily sodium, potassium, and magnesium salts that increase water hardness. Personally I find it hard to believe that Trace would have any noticeable effect on your fishes coloration or behaviour. Neither product is a buffer.