SHREVEPORT, La. (AP) — There’s nothing like a slice of cool, juicy, red watermelon on a hot summer day. Unless it’s a yellow watermelon. Kelly Plunkett grows Summer Gold watermelons on her Louisiana farm. She says the gold variety can be even sweeter than more conventional melons. There are lots of myths about how to choose a ripe melon. Plunkett says some people thump melons until their hands hurt. But she has a simpler method. Plunkett advises to pick a melon by its color. She tells a local paper (The Times) the duller the better, because shiny melons aren’t ripe.