Good evening.
Don't know to whom this information might be useful, but anyway, as I finally figured it out, I will post it here.
I am making a game server (text based game), and players connect to the game using telnet. To have more advantages while playing, players can use other clients rather than the telnet console which comes with every Windows OS. Those clients usually support ANSI colors, and in this way, if I want the server to send colored strings to clients, I should add before each string the following codes (color - code):
Black CHR$(27)+"[0;30m"
Blue CHR$(27)+"[0;34m"
Green CHR$(27)+"[0;32m"
Cyan CHR$(27)+"[0;36m"
Red CHR$(27)+"[0;31m"
Purple CHR$(27)+"[0;35m"
Brown CHR$(27)+"[0;33m"
Gray CHR$(27)+"[0;37m"
Dark Gray CHR$(27)+"[1;30m"
Light Blue CHR$(27)+"[1;34m"
Light Green CHR$(27)+"[1;32m"
Light Cyan CHR$(27)+"[1;36m"
Light Red CHR$(27)+"[1;31m"
Light Purple CHR$(27)+"[1;35m"
Yellow CHR$(27)+"[1;33m"
White CHR$(27)+"[1;37m"
Tested with telnet windows client itself, and colors also work.