I'm looking to paint my ISD in white to match the one's in Rouge one, has anyone tried this or know of the shade used, any information would be great thank you

I actually stumbled on an easy way to do this. So, I had repainted an ISD flat white in preparation for doing this myself. Then I promptly got distracted, and moved on to other paint jobs. In the process I left the ISD about 2-3 feet away from where I was spray painting a bunch of Armada bases black. The next day when I went to assemble the bases, I realized that my ISD was now dingy grey from over spray, fortunately the 99 cent flat black I used for the bases drys very fast. So fast, that I was able to wipe off the over spray with a soft cloth. The effect was an almost perfect R1 style ISD. All it required was lighting and details.