...and it isn't just "#Cstrike_Chat_All", here's what I've found in the new cstrike_english.txt file, go figure them out yourself
Code:
// Radio and chat strings can have control characters embedded to set colors. For the control characters to be used, one must be at the start of the string.
// The control characters can be copied and pasted in notepad.
// = 0x02 (STX) - Use team color up to the end of the player name. This only works at the start of the string, and precludes using the other control characters.
// = 0x03 (ETX) - Use team color from this point forward
// = 0x04 (EOT) - Use location color from this point forward
// = 0x01 (SOH) - Use normal color from this point forward
"Game_radio" "%s1 (RADIO): %s2"
"Cstrike_Chat_CT" "(Counter-Terrorist) %s1 : %s2"
"Cstrike_Chat_T" "(Terrorist) %s1 : %s2"
"Cstrike_Chat_CT_Dead" "*DEAD*(Counter-Terrorist) %s1 : %s2"
"Cstrike_Chat_T_Dead" "*DEAD*(Terrorist) %s1 : %s2"
"Cstrike_Chat_Spec" "(Spectator) %s1 : %s2"
"Cstrike_Chat_All" "%s1 : %s2"
"Cstrike_Chat_AllDead" "*DEAD* %s1 : %s2"
"Cstrike_Chat_AllSpec" "*SPEC* %s1 : %s2"
"Cstrike_Name_Change" "* %s1 changed name to %s2"