Your favorite clairvoyant goth hero and high school clique-buster has inspired the theme for this year’s Summer Scream at Lakeside Amusement Park — even if its co-producer initially had trouble wrapping his head around the concept. “Chris came to me with three ideas for this year, and he left Winona Ryder for last,” said Andrew Novick, who along with Chris Getzan programs and runs the annual fundraiser for Denver Film.