Pigments of Tokuno (Lesser)
The basic Pigments of Tokuno are used to remove custom colors from magical items such as weapons and armor. They were obtained during the Treasures of Tokuno events and are classified as a Minor Tokuno Artifact. Such items gained from the first two events had 10 uses each, though versions from the third had just one.
Note that this item works the same way as the quest reward Bleach and the dyes with no charges remaining disappear and cannot be turned in.
Whenever the events are active, the Minor Artifacts can be obtained by slaying creatures around the Tokuno Islands (with the exception of Cranes). The more creatures killed, the more likely an artifact would appear in your pack upon defeating the next foe.
If you have 10 such Minor Tokuno Artifacts, they can be "returned" to Ihara Soko the Imperial Minister of Trade in exchange for a Major Tokuno Artifact (even if they have been damaged through use).