Search this forum for last 4 years for +custom +battery +icon and you will see some other examples of what I'm discussing below.

Before doing any of this, make sure you have a backup of your Config File prior to manually editing!!!!!

In order to do this, you will need to open your PCF (it's a zip file) in either WinZip or WinRar. Extract the file 'ConfigEdit.xml' from the zip and then edit it with a text editor. Inside this file, search for TIMESTATUS or DATESTATUS and you will then see the markup you need to change. There specifically will be a font size an text color listed. Following edit, simply drag the ConfigEdit.xml file back into the zip. Note that there may be a duplicate file with a path of '\' after dragging this file back in. If so, remove the duplicate file and leave the one you just edited.