as promised, the part number for the lower segment LED is: LTC-4627g from LiteOnit's .4" (10mm) size. i have ordered a blue module fromn SparkFun.com the part is super cheap. i'll have my tech install it by this weekend and i will post pictures. hopefully it fits. the upper LCD fit with the research i did for the blue 24x2, so this should fit too. *attempt at your own risk.