Mark Kerr <mkerr23@gmail.com> writes:

> The org-todo face is used for todo keywords in non-blocked items.
>
> When org-agenda-dim-blocked-tasks is set to true, however, the todo keyword
> is instead displayed using org-agenda-dimmed-todo-face.
>
> The org-priority face, however, is still used for blocked tasks.
>
> Is this by design or due to an error on my part? Is there a possible
> workaround?

This appears to be an omission on Org part, related some overlay
implementation details in Emacs.

Can you try the attached patch?