I get what you're saying, but if you don't know the color that the recipe provides, you can't put an accurate color in the glass.
As stated, ive brewed beers that still fit the style guides from 6 to 25 srm, which is a pretty significant difference. without knowing the ingredients, one cannot know the color the beer will be. Perhaps find out the ingredients from wherever youre getting them from and then enter them as you would if you were building a recipe. Perhaps contacting picobrew about their recipes would be the best bet, as then you would know what you're putting in your beer.
If it automatically chose a color for a style, than people creating a beer wouldn't be able to see what color their beer is as they're crafting their recipe. It also can't put in estimated og, fg, ibus, etc. nor would the software be useful to anyone if it automatically entered numbers based on a middle of the road number per the style.
Follow?