I found ceramic engine spray paint at advance auto parts that is a "close enough" match for the kawasaki green on my 95. $5 a can or something...
I used it to spot touch up parts I had to weld back on (after a good cleaning and application of primer) or that had been chipped and rubbed through.
After the first full day of riding, my inside ankles on my boots have a nice green glow, and the frame has lots of little chips, but it looks better then it did. When it gets sufficiently annoying, I'll just get out some newspaper and masking tap and touch up anything I can see that bugs me.
So my advice would be that if you strip it all the way down to the frame (I was 90% of the way there, its a LOT of work), then definitely powder coat. And the silver paint job posted on the other thread looked really nice... much nicer then green.
But if you just want a marginally less ratty looking ratty dirt bike (my goal), then the green engine paint comes off really easy, but it also goes on really easy. Just don't go into it with unreasonable expectations.