rainbows in console via node

rainbow.js

c = [41,43,42,46,44,45,41];
var rainbow = '';
for(var i=0; i<6;i++) {
      rainbow += '\x1B['+c[i]+'m';
      rainbow += '\x1B['+(c[i+1]-10)+'m';
      rainbow += ' ';
      rainbow += '\x1B['+c[i]+'m';
      rainbow += '\x1B['+(c[i+1]-10)+'m';
      rainbow += '░';
      rainbow += '\x1B['+c[i+1]+'m';
      rainbow += '\x1B['+(c[i]-10)+'m';
      rainbow += '▓';
      rainbow += '\x1B['+c[i]+'m';
      rainbow += '\x1B['+(c[i+1]-10)+'m';
      rainbow += '▒';
      rainbow += '\x1B['+c[i+1]+'m';
      rainbow += '\x1B['+(c[i]-10)+'m';
      rainbow += '▒';
      rainbow += '\x1B['+c[i]+'m';
      rainbow += '\x1B['+(c[i+1]-10)+'m';
      rainbow += '▓';
      rainbow += '\x1B['+c[i+1]+'m';
      rainbow += '\x1B['+(c[i]-10)+'m';
      rainbow += '░';
}
console.log(rainbow+rainbow+'\x1b[0m');