New PMP Question & Answers with explanation

As an external vendor, you are managing a complex software project on a time-and-materials (T&M) contract. One of your team members reports a breakthrough in automating some of the testing activities. This may result in cost savings to the project and completion of the project one month ahead of schedule. Which of the following actions would you take?
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A project team member finds that the color scheme of the webpage he is designing appears too gaudy and decides to change it to a melloweddown color scheme. The customer approved the original color scheme and the color palette. The independent testing team flags this as a defect, and a heated discussion ensues between the team member and the testing team. What is your view?
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Which of the following statements is correct?
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A number of teams are developing an enterprise system using the agile approach for product development. Which of the following is a major risk item for such a complex project being performed in an agile environment?
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Where would you find a detailed list and description of specific project assumptions associated with the project?
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