Hi! Just wanted to weigh in on the color of the tunic.
Best way to color match, i've found, is to take pics of a physical piece of fabric in natural light (but in the shade) as well as synthetic light, (both warm and cold lighting).
When I made a prototype of the Andor ISB suit, i naturally assumed it was white. But when we made it in white...it seemed off, too cold, compared to the Andor ISB. So when someone in one of the imperial officer facebook pages said it was light grey, we tried to find a very light grey to match...and boy did it match!
I'll let these pics speak for themselves:
Image 1: the light grey armani fabric:
Image 2: Clockwise from top left: Light grey tunic (natural light, indoors, morning) , white tunic (natural light) , Dedra's tunic, CRL white tunic