Actually, I did some research and the fluid just has to meet "MS5931" standards....
Where did you read that?
"2005–2010 Jeep Grand Cherokee and 2006–2010 Jeep Commander vehicles require Mopar Hydraulic System Power Steering Fluid, Part No. 05142893AA meeting MS-10838"
What does your owner manual say? Mine (2010) says MS-10838.
MS-10838 has no aftermarket equilvalent that I am aware of.
The Jeep Commander has an hydraulic fan powered by the PS system, I "imagine" that puts a huge toll on the PS fluid. I suspect that is why Chrysler came up with the MS-10838 spec for PS fluid for the Commander (which happens to be a hybrid for hydrualic systems as well), but the manual doesn't say that, so I don't know.
If you have a Hydrualic Fan (Hemi, not sure if the 4.7L V8 has one) then I'm "guessing" you'd be foolish NOT to use the MS-10838.
If you do NOT have a Hydrualic Fan, then I'm "guessing" you "might" get away with MS-9602 (ATF+4) or another superior quality synthetic fluid that states it exceeds MS9602. But the manual doesn't say that, it is only a guess on my part, so I could be very wrong and you could have PS problems.
MS5931 is an older PS Spec from the 90's. For most (but NOT all) Chrysler/Jeep vehicles it was replaced by MS9602, which is ATF+4. Note, the MS9602 spec is ATF+4 not just any old ATF, ATF+4 is a synthetic ATF that has a superior additives package. Put Dexron II in your Jeep PS system and you will have problems. But according to the manual, even ATF+4 is NOT good enough for the Commander.
Don't go by color, its just dye, it really has no bearing at all on the quality or compatibility of the fluid.