Read the rest of the article for the prompt string, as well as a brief tutorial on ANSI codes and their use in the prompt command...
My Terminal window is set to black with 40% transparency, and I find that Courier Bold Oblique 14 pt. set to cyan is the most legible font for me. My prompt is yellow and white:
set prompt = "\n%{\033[1;93m%}>>>%{\033[0;93m%}[%{\033[0;37m%}\\!\!%{\033[0;93m%}]
[%{\033[0;37m%}%D%w%y%{\033[1;93m%}%P %{\033[0;37m%}EST%{\033[0;93m%}][%{\033[0;37m%}%n
%{\033[0;93m%}@%{\033[0;37m%}%m%{\033[0;93m%}][%{\033[0;93m%}%c03]\n\n%#%{\033[0m%} "[Author's Note: this is all a single line. There are spaces surrounding the "=" sign, and a single space before the closing double quotation mark. Put in ~/.tcshrc or ~/Library/init/tcsh/environment.mine.]
Here's a quick tutorial on color and ANSI codes. Literal strings are enclosed with %{ and %}. ANSI graphics mode begins with \033[ and ends with m. ANSI color codes are placed between \033[ and m, separated by semi-colons. Thus
%{\033[n;n;nm%}where n is one of the codes from the list below:
ANSI Color codes
0 = default colour
1 = bold
4 = underlined
5 = flashing text
7 = reverse field
31 = red
32 = green
33 = orange
34 = blue
35 = purple
36 = cyan
37 = grey
40 = black background
41 = red background
42 = green background
43 = orange background
44 = blue background
45 = purple background
46 = cyan background
47 = grey background
90 = dark grey
91 = light red
92 = light green
93 = yellow
94 = light blue
95 = light purple
96 = turquoise
100 = dark grey background
101 = light red background
102 = light green background
103 = yellow background
104 = light blue background
105 = light purple background
106 = turquoise background
So the string
%{\033[0;1;5;44;93m%}%nwould reset your user name (%n) to default (0), then set it to bold (1), flashing (5), yellow (93) on a blue background (44).

