http://b.hatena.ne.jp/entry/social.technet.microsoft.com/Forums/en/w7itproui/thread/1a9be361-312e-4435-a53d-f9b525bc23c3
https://social.technet.microsoft.com/Forums/windows/en-US/1a9be361-312e-4435-a53d-f9b525bc23c3/windows-7-remote-desktop-client-cannot-set-display-at-256-colors?forum=w7itproui
rdpファイルに「session bpp:i:8」と書く
http://serverfault.com/questions/491460/how-to-configure-windows-rdc-to-use-16-color-mode
session bpp:i:8
The number (8 in this case) sets the color resolution in bits per pixel. 8 (for 256 colors) is the lowest value available through manual editing (while the lowest value available through the RDC GUI is 15).
めも