I assume that the line is to still be on the same phone # (one line). The colors themselves do not matter. I have seen the phone co. use all sorts of colors to accomplish the same thing. The important thing is which pair to use. Phone jacks of the usual sort have space for two pairs. They are oriented so that one pair is the inner two contacts and the other pair is the outer two contacts out of the four in a row. The usual convention for a single line setup is to use the inner pair. Run any kind of double wire (light duty speaker wire is fine) maintaining the same polarity and the same position (inner pair) to the new jack(s). The polarity will likely be correct. This can be checked with a cheapie little phone line polarity checker from Rascal Shack. Many modern telephones are not fussy about polarity anyway. Good luck! Joe