Can't read Atlas Scientific colour detector

Using Arduino Sensors
12

that looks like some ascii code very promising (said the optimist)

#include <SoftwareSerial.h>

SoftwareSerial mySerial(2, 3);  

void setup()  
{
  Serial.begin(115200);
  Serial.println("Start color sensor");

  // set the data rate for the NewSoftSerial port
  mySerial.begin(38400);
  mySerial.print('C');
}

void loop()
{
  if (mySerial.available()) 
  {
    char c = mySerial.read();
    Serial.print(c, DEC);  // <<<<<<<<<<<<<<<<<<<<<<<<<<<<< line changed
    if (c == ',') Serial.println(); // split the R G and B
    if (c == 13) Serial.println(); // extra newline
  }
}

can you give it a try?