! Custom but I believe it looks better than default.
*xterm*background: #404552
*xterm*foreground: #E4E4E4
*xterm*cursorColor: #d0d0d0

! Ambiance Colour Theme
*xterm*color0: #2E3436
*xterm*color1: #CC0000
*xterm*color2: #4E9A06
*xterm*color3: #C4A000
*xterm*color4: #3465A4
*xterm*color5: #75507B
*xterm*color6: #06989A
*xterm*color7: #D3D7CF
*xterm*color8: #555753
*xterm*color9: #EF2929
*xterm*color10: #8AE234
*xterm*color11: #FCE94F
*xterm*color12: #729FCF
*xterm*color13: #AD7FA8
*xterm*color14: #34E2E2
*xterm*color15: #EEEEEC