I have been seeing case colors that can be put on with chemicals like FX Steel and another that uses super blue cold blue,and other that use propane burners.Has anyone used any of these and will they protect steel?How do you get them off if you don't like the way they turn out?
The one video where the guy uses the super blue the case colors looks just like the ones on the old Ruger vaquero and a lot of Colt SAA army's!
Do you think they would ever look like original case with a little wear and use?

Don't bother. It's an instance where beauty is fleeting- easily worn off. As for applying fake colors with a torch- please don't. It always looks like a Bubba job and in fact you may harm the case hardened surface by annealing it as an unintended consequence of torching it, or even warp it in extreme circumstances. Read up on case hardening- it's a heat treating process that infuses extra carbon into the steel's surface for wear qualities and to impart some strength to the steel object. The colors are a by product of that process and nothing more, but are something we have come to cherish. Most modern industrial carburizing (case hardening) in fact doesn't impart much of a color change to the steel. To get the colors requires submitting the steel to one of a couple of archaic processes chief of which is packing it in a proprietary mix of bone charcoal, leather, and other organic sources of carbon, in an airtight vessel, in a controlled heat environment, and quenching in a controlled manner. There's a reason color case hardening artistes command the prices they do. I'm surprised it's generally as cheap as it is.

There are no shortcuts in the game of case coloring, although some try.

You will not get a better answer than gnoahhh's. Thread finished. Complete at minimum.