So then what is the ultimately magical combination?
If I were to buy (not that I am, it's hypothetical) -- ONE male and ONE female and wanted to breed for puppies of all colors specfically, what would the combo be? I specifically want to have as many different color options in the puppies as possible (it's a given their familial disease and helth cert history is spotless and they are so perfect themselves as young adults that I would literally be doing a disservice to mankind NOT to breed them -- when I go hypothetical I go BIG!).
Example in point from my past: IF you have a persian female cat who is a dilute tortie (blue/cream) in color and solid in pattern though she had one parent who was pointed (Himi) and one who was solid (Persian -- tabby pattern specifically for the biggest bang for the buck) and bred her to specifically a flame point himi who had one parent who was a dilute and one who was not . . . you can get every color of the rainbow whether dilute or not and tabby or not and pointed or not. You can also use a tortie female (with a Himi parent who was dilute and a Persian parent who was tabby) and a cream point male OR a flame point male if you know he also had a dilute parent. These two/three combinations produce the most combination of colors and patterns from dilute to non-dilute, solids to tabbies, solids to pointed. Taste the rainbow!
What is the best rainbow choice for two shelties? Just curious.