Indigo-3G does work well during a fat poss phase. However, something to keep in mind with Indigo-3G, is that to get the most out of it you’ll want to increase your carb intake. This is because while Indigo-3G does stimulate the release of stored fat for burning, it also does a tremendous job at shuttling carbs into your muslces (rather than fat cells).
If you are currently enjoying your nutriton plan and the thought of increasing your carbs doesn’t sit well (even though you don’t have to worry about it with Indigo-3G), something like HOT-ROX Extreme would be ideal. HOT-ROX directly ramps up your metabolism to help you lose body fat.