Absurdly Obtuse wrote:
 I've been looking at info on the Internet, and I have gotten
 confused.  A lot of places say that the DEC VT525 can do color
 graphics, whereas some places say it can only do text.  Is there a
 DEC color graphics (ReGIS and Sixels) terminal that can accept a
 PS/2 keyboard? 
The VT525 offers colour text only. The last colour graphics terminal
 from DEC was the VT340. However, the VT340 takes an
LK201 keyboard, not 
PS/2.
You'll find the definitive specification at Boundless Technologies'
website, <URL:http://www.boundless.com/bti>.