One of the recent changes to the primary game code itself was the implementation of 256 bit colors. In order to take advantage of this, you must have a client that supports 256 colors.
A listing of current MU* Clients that support 256 bit colors can be found here.[1]
In order to take advantage of these colors, you must enable the 256Color flag by typing @set me=256COLOR
In order to view the current color listing (and the various hues offered on TwistedMUCK) please type the following command: ansitest
Various options can be set with the new colors via personal configurations via the Player Editor (The command to use this is "pe") and manual toggles. A brief selection of some of the manual toggles are listed below.
@set me=_/colors/say/text:<COLOR> This will change the colors of the text that's being said itself.
@set me=_/colors/say/pose:<COLOR> This will change the color of the pose itself, IE: The name of the person speaking.
@set me=_/colors/say/quotes:<COLOR> This will change the color of the quotes themselves.