colours the string of a number red if negative and green for positive. for bg=1 the background.

gistfile1.js

var clc = require('cli-color');
var colkeys  =new Array(2);
colkeys[0]   =new Array();
colkeys[1]   =new Array();
colkeys[0][0]=clc.red;
colkeys[0][1]=clc.green;
colkeys[1][0]=clc.bgRed;
colkeys[1][1]=clc.bgGreen;
exports.gCol=function(str, bg){
    return mat[bg?1:0][str[0]=='-'?0:1](str);
};