bigdawgfoxx-Not all products play nice together, so it can be a little tricky/risky to generalize too much about what toppers work OK on what underlying stuff.
In this case, the closer you can get to "clean paint" the better things are likely to turn out.
Even without doing a full, "real" polishing, the Color-X should get things good enough for a *THIN* application of 845 to work OK.
Cleaner-waxes are designed to clean off whatever's on there now, replacing it with *their* stuff. That stuff is usually not problematic and whatever's on there now is.
[Repeat opinion that the pores/microfissures are overloaded with excess 845 that can't bond because the paint needs better prep...]
Yeah, Color-X will do some concealing. Yeah it should be OK with a topper.
If there's any chance that the Color-X/845 combo won't work right, it'd be from the solvents in the 845. That'd still surprise me as I've used 845 over top of all kinds of products with no problems.
Heh heh, I'd sure be surprised if using TW was a step in the right direction, not that I've never been wrong before (but this one would be one for the books).
If you can use that PC- white or black for the Color-X, red for the 845 (assuming the usual pad color/application match-ups).
NO WAY for me to overemphasize the importance of a test spot. Make sure that whatever you do works before you try it on the whole car.