Funny you posted this today I just finished making Alpine and musk strawberries preserves. They came out purple! I mixed them together, alpines are small and musks are not that productive. I saved enough of each for one batch of jam. I have yet to taste. I JUST made them, too hot yet!
Earlier in the year I made pineberry preserves and they looked a little funky, but wow! They were super good! They lasted about a NY minute!