This document discusses how to improve government proposals through effective proposal reviews. It outlines common types of proposal reviews, such as pink, blue, red, green and gold team reviews. It provides tips for mastering these usual color-coded reviews, including using checklists to ensure all steps are followed and facilitating reviews effectively. The document also discusses mistakes made by pink and red team reviewers and recommends practices for more helpful reviews, such as training reviewers and experimenting with asynchronous reviews. Finally, it promotes additional indispensable reviews like in-process and peer reviews to catch errors and provide better feedback.