We have written about how to get a reflective dock using shh. However, if you are looking for a way to get a reflective dock for your iPhone or iPod Touch through Cydia, here is a way. You will need to add a new source to Cydia (check out THIS article if you need instructions on how to add a source to Cydia). The source you will need to add is: david.ashman.com/apt/ After your sources have refreshed, you will see that a new package has been added to your iPhone called ReflectiveDock. Once installed, you will have a reflective dock. It does add two options to Winterboard, No Dock Reflections and Dock Reflections however, I have found that it is not affected by being turned on/off in WinterBoard…it is just always on unless you specifically select No Dock Reflections.
You can take a look at the original thread on Mac Themes HERE. Also please note that when you install the new source it also adds a packages in Cydia called WeatherIcon. I would not recommend installing this application. We tested on two iPhones and both crashed.