All your existing settings are preserved when you upgrade. If you are an existing user of Classic Shell, you need to update the app. To change the taskbar text color in Windows 10 using Classic Shell 4.2.6, you need to do the following.
In the following example, I changed my taskbar text to sky blue color: How to change taskbar text color in Windows 10 One of the new options in Classic Shell 4.2.6, which is just released, is the ability to change the taskbar text color. A new version of the popular Classic Shell app, which provides a replacement Start menu for Windows 7, Windows 8 and Windows 10, along with a bunch of unique customization options for Explorer and Taskbar, now gives you full control over the taskbar's appearance.