根据美国专利局的文档描述（"Glass appearance window frame colorization"和"Dynamic reflective highlighting of a glass appearance window frame"），Aero的投影会随着当前窗口位置的不同而变化，同时或者替代的效果可能也会随一天时间的变化而变化。原文如下：

As described above, a reflective highlight of a glass appearance of an application window frame may be configured to change during a move and/or resize operation based on a set of rules that describe a reflective highlight image's placement relative to the current position of the application window within a desktop space. Concurrently or alternatively, a reflective highlight may be configured to change in response to a time of day event.

为了清楚解释如何发生，请看下面的图表：