SUSPECT DECA - PLEASE HELP

[Big D]

HAS ANYONE COME ACROSS NORMA DECA THAT DIFFERS IN COLOUR FROM ONE TO ANOTHER? I HAVE 16 AT HOME AND THREE ARE A DARK YELLOW WHILE THE REST ARE A PALE SHADE. ARE THERE ANY TESTS THAT CAN BE DONE AT HOME ?
THANX FOR ANY HELP

 

[massmonster32]

I had the same problem with one source so now I get them else where. I dont know but I am pretty sure the yellowish colored ones are legit and the palish I dont know what they are. MM