Delhi, sign up for ANA's frequent flier program. Their site has a pretty good tool that shows Star Alliance award availability across many carriers. The best part is that they are showing partner award availability - the exact inventory you'd be pulling from with your CO miles once CO joins *A. (This is different than the inventory an airline sets aside for its own fliers.)

Of course, it remains to be seen whether CO will block these awards on their end like United is known to do. Does CO practice "Skyteam filtering" now? I don't know...