Signature
Crafter signature colors: the server defaults, and each player’s own pick.
/mw signature set <lineColor|hammerNoteColor> <#RRGGBB|default>
masterwork.admin
Recolor part of the crafter signature line shown on a stamped item’s tooltip. The color is read at stamp time and baked onto the item instance, so recoloring the server default does not repaint gear a player is already carrying; the item resync sweep catches up to it the next time that gear is reached (on join, on an inventory change, or when a container holding it is opened).
/mw signature color [entry]
any player
The caller’s own pick for the color of their crafter signature line, overriding the server default lineColor on gear they forge from now on. With no entry, clears the pick and falls back to the server default. Like the admin set above, the color is read at stamp time, so it applies to items stamped from now on, not to gear already carrying a signature. Also reachable from the Preferences tab of the /mw page.