应该不能乱改外墙颜色吧，大家都是统一的，要是随便改，估计会乱套，嘿嘿。。。这个是我推断的。。。下个问题不是推断，而是确切的：新房子一般有一个2-5-10的计划，举一个最出名的房屋保险公司的例子：
2 Year Materials & Labour Warranty
First 12 months ― coverage for any defect in materials and labour
First 15 months ― coverage for any defects in materials and labour in the common property of a multi-unit building
First 24 months ― coverage for any defect in materials and labour supplied for the electrical, plumbing, heating, ventilation, and air conditioning delivery and distribution systems. In addition, coverage for any defect in materials and labour supplied for the exterior cladding, caulking, windows and doors that may lead to detachment or material damage to the new home
5 Year Building Envelope Warranty
10 Year Structural Defects Warranty
