Interesting topic to discuss, indeed. I believe that the best option here would be to explain what is the difference between particular styling techniques, the idea behind Telerik StyleManager and Implicit styles and how they work. Think in this way that for know we support two theming mechanisms - these styles are structured to work in both ways - with our StyleManager and Implicit styles.
As you have already noticed we ship themes and binaries in the following folders:
Binaries are those assemblies with the default Office_Black theme and Binaries.NoXAML do not contain the default theme. In the Themes/Themes.Implicit folders you may find our themes as separate projects and you may use these to create your own themes or just to take the desired component style per assembly. In the world of Silverlight they are almost equal and have a keyed style and implicit one based on it. In WPF however you have those and additional platform specific composite key, which is internally used by our StyleManager. There is a tricky part here - in the standard style files from the Themes folder you have a reference to a theme like the following one:
Where the Theme
stands for the name key of the corresponding theme:
Within an implicit style you do not have such key and reference to a particular theme.
In our online documentation you will find more info on that matter, please follow this link.
If you have any additional questions do not hesitate to contact us!
the Telerik team