Total colors (256) minus full 6x6x6 color cube (216) equals 40 map entries. Assume Openwindows uses 7 colors (5 unique plus black and white). This leaves 35 colors for Netscape. Subtract 7 for EGA colors, this leaves 28. But Navigator 4.0 uses 34 private colors for drawing the toolbar and the animated Netscape meteor-shower animation. This number should be reduced.

Note that 808000+7f7f00, 808080+7f7f7f, 810000+80000 are wasted duplicates. Replacing c0c0c0 with cccccc would save a fourth colormap slot.

The colors that 'openwin' uses to draw the window borders and icons can be changed by the user. Here I edited the entries in the .Xdefaults file, forcing 'openwin' to use colors from Netscape's palette.

(stored in ~/.Xdefaults)
OpenWindows.WindowColor:	#cc9966
OpenWindows.WorkspaceColor:	#3399cc
derived OpenWin colors: b7895c  664c33  f4b77b  (plus 000000 and ffffff)

Netscape Navigator 4.0-PR2 decorations, tool icons and animated "N" logo:
00373c 100d0e 1a5f67 222222 2f7e88 3b1e12 3f2a2b 422f5a 429aa7 4c62b9 640000
642829 6f6f6f 7f7f00 7f7f7f 810000 843a0b 8c8c8c 925b45 9d1233 a3a3a3 b2f7fc
baa0a7 bfbfbf c0c0c0 c56088 d9d9d9 dd0000 e78058 e7e7e7 e87119 e8a898 ef1c47
f1d3d5

EGA colors (non-intensified): 000080 008000 008080 800000 800080 808000 808080

6x6x6 color cube: (without ffccff ffff33 ffff66 ffff99)
000000 000033 000066 000099 0000cc 0000ff 003300 003333 003366 003399 0033cc
0033ff 006600 006633 006666 006699 0066cc 0066ff 009900 009933 009966 009999
0099cc 0099ff 00cc00 00cc33 00cc66 00cc99 00cccc 00ccff 00ff00 00ff33 00ff66
00ff99 00ffcc 00ffff 330000 330033 330066 330099 3300cc 3300ff 333300 333333
333366 333399 3333cc 3333ff 336600 336633 336666 336699 3366cc 3366ff 339900
339933 339966 339999 3399cc 3399ff 33cc00 33cc33 33cc66 33cc99 33cccc 33ccff
33ff00 33ff33 33ff66 33ff99 33ffcc 33ffff 660000 660033 660066 660099 6600cc
6600ff 663300 663333 663366 663399 6633cc 6633ff 666600 666633 666666 666699
6666cc 6666ff 669900 669933 669966 669999 6699cc 6699ff 66cc00 66cc33 66cc66
66cc99 66cccc 66ccff 66ff00 66ff33 66ff66 66ff99 66ffcc 66ffff 990000 990033
990066 990099 9900cc 9900ff 993300 993333 993366 993399 9933cc 9933ff 996600
996633 996666 996699 9966cc 9966ff 999900 999933 999966 999999 9999cc 9999ff
99cc00 99cc33 99cc66 99cc99 99cccc 99ccff 99ff00 99ff33 99ff66 99ff99 99ffcc
99ffff cc0000 cc0033 cc0066 cc0099 cc00cc cc00ff cc3300 cc3333 cc3366 cc3399
cc33cc cc33ff cc6600 cc6633 cc6666 cc6699 cc66cc cc66ff cc9900 cc9933 cc9966
cc9999 cc99cc cc99ff cccc00 cccc33 cccc66 cccc99 cccccc ccccff ccff00 ccff33
ccff66 ccff99 ccffcc ccffff ff0000 ff0033 ff0066 ff0099 ff00cc ff00ff ff3300
ff3333 ff3366 ff3399 ff33cc ff33ff ff6600 ff6633 ff6666 ff6699 ff66cc ff66ff
ff9900 ff9933 ff9966 ff9999 ff99cc ff99ff ffcc00 ffcc33 ffcc66 ffcc99 ffcccc
ffff00 ffffcc ffffff