These two sets of tubers were harvested from a Tom Wagner TPS variety called Pig Knuckles.  Both plants produced fingerling shaped tubers which had red skin and some color in the flesh.  The golden-pink fleshed tubers had a slightly higher yield, and I will be keeping some of these to grow again next year.  Potatoes with more intense colors in their flesh are said to contain higher levels of nutrients.  I think that intense flesh colors are just prettier and more fun to cook with than the white or pale-yellow flesh of most common store-bought potatoes.  In my experience, flesh color does not affect the flavor very much.  A white potato tastes about the same as one with red or blue flesh.  In any case, all of the potatoes from the garden taste better than store bought tubers.