[Pidgin] #12820: separate color option for gchat "do not disturb" vs "away"

[Pidgin]

#12820: separate color option for gchat "do not disturb" vs "away"
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 Reporter:  dancor               |     Owner:  sadrul
     Type:  patch                |    Status:  new   
Component:  finch (gnt/ncurses)  |   Version:  2.7.4 
 Keywords:                       |  
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 I wanted the ability to distinguish these, and I think it might be useful
 to others.  I am not familiar with this codebase so let me know if this
 change should be done a different way, or the change is misguided in
 general.

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Ticket URL: <http://developer.pidgin.im/ticket/12820>
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