Fixed!!
I'm so relieved I thought I had to go back to the store and fight with the korean vendors lol !
the so called "provia standard" settings from fujifilm is just pure crap, they WILL cast a slight yellow color to your images.
I tired the Pro. Neg. Std profile it diminished the effect but it was still present.
so I went out of my way and used sliky pix, checked out the raw files, adjusted the exposure, and not even the slight color fringing !
by the way, the dynamic range is >INCREDIBLE< a huge upgrade from my 5D2
so I learned a few things
The camera screen does not show the raw file, but the filed processed under fujifilm's crappy "film emulations" all over exposed film emulations will have a yellow color cast up to some extent pro neg std being the least.
there is apparently no default way to save jpegs, all jpegs have to go through one of the ****ty film emulations, provia standard isn't actually "standard"
Finally & thankfully the film simulations do not affect raw files