Agree with Culzean. Coolant colour is just a dye, the antifreeze is there in all of them, it's the corrosion inhibitor pack which matters.
I also do the partial change routine. Drain the easy bit, maybe half the circuit or whatever, and do it reasonably regularly and you won't have any real issues.
For the Jazz I'll use the Honda stuff from Cox as and when it comes due. In my other engines I generally use Comma G30 (BASF glysantin 30 base, silicate free) since it suits them all so only need one type on the shelf. I'll put up with the Honda having it's own stuff. It's cheap enough in the big scheme of things, 5L of coolant every few years won't break the bank.
As for FSH, I agree in general. Having said that I've recently bought a 10yr old Yaris with a Toyota dealer FSH and the coolant is sparkly clean and has obviously been changed recently, so credit to them. The brake fluid was clean too, but I've changed it anyway with new discs/pads.