Fashion and footwear chain Colorado Group Ltd has posted a 71.1 per cent jump in first half net profit to A$4.2 million from A$2.4m in 2001 on the back of a 16.9 per cent rise in sales to A$194m. The Sydney-based company said the profit rise reflected the more constant revenue streams achieved by its new wholesaling businesses and it expects strong full-year results with earnings growth in the double digits.