To color tag items, first select them then use the right click context menu. The color tag submenu there lists 3 predefined tag colors and one that clears tags from the selection. Tagged items are shown with a color border around their name, making them stand out. These colors don't change the actual files in any way; you just use them to mark files for whatever reason you like, e.g. for further processing. They are stored in a database that xplorer² uses to mark files.
Color tagging is not related to any color coding rules you may have. The tag border is drawn on top of any color coding. Color tagging can be quickly applied to individual files without defining complex color coding rules.
Use the new color tag filter button next to the addressbar's filter box to show only items that are tagged with specific colors. You can search for color tags in 2 ways. Either use the color tag filter button, or use the color tag stock property to define search rules as with any other file property. Note that using the color button is much faster, but the color tag attribute (1=red, 2=green etc) can be combined with other search criteria.
You can color tag folders in the tree as well, but there the only gain is making a tree node stand out. You cannot filter the folder tree elements. For an all round introduction to color tagging please watch this demo video
video playback requires flash, it should play in internet explorer easily
There are many more things added for v3.5 as you can see in the changelog. Here are a few important new features:
If you don't have xplorer² installed try the download page for your free trial.