Ok, finally got it to work as expected!! ( though I still cannot understand what I was doing wrong and created the blinking effect..) Anyway, these are great news!
I have one last question, and I wont bother you again 
I notice inside the library that there is also a lookup table with 1024 values
//lookup table for 1024 CIE lab brightness corrected values with 12 bit resolution
const uint16_t CIEL_10_12[] PROGMEM = {
 0, 0, 1, 1...
Is it possible to access it and use it, like you use the 256 lookup table with the 8bit commands?