In choosing their shade of green, most credit unions are staying light. Among the color-coded priorities, black (ink) is driving strategy in most shops. Yet among the environmental pioneers -- those that have built the strongest "green" programs, spent the most money and had the most experience -- the mood is upbeat. They're gaining members, making money and burnishing their reputations as good corporate citizens. For some CUs, being green means following a well-thought-out strategic plan that can be rewarding in both the short run and the long run. Those who understand the trends well and have the resources would be well advised to get started, suggests George Hofheimer, CAE, chief research officer at Filene Research Institute. But to be a leader you have to take real action, not just 'greenwash' your marketing, he cautions. For CUs, the global trend toward sustainability, which includes green projects, represents a "sleeping giant" of opportunity.