[Zh3r0]

new ColorName[6][0] = {
{"COLOR_WHITE"},
{"COLOR_FADE1"},
{"COLOR_FADE2"},
{"COLOR_FADE3"},
{"COLOR_FADE4"},
{"COLOR_FADE5"},
};

Must be [0] not [20]!

Change
SendClientMessageToAll(ColorName[kolor], string);


to
SendClientMessageToAll(ColorName[kolor][0], string);