[jimbo2012]

I was just reading about the stones and heat etc.

Lighter colors stones don't absorb as much as darker, but an easy way to avoid that issue is use stone on the north facing or shaded areas.

That article offered another good idea,

in the future if you think you want to go with a certain type of stone - start with just about a 5 gallon bucket of the stones you have in mind, put them out in a small area in relation to other elements you have in mind (near the home, along a walkway, whatever/wherever you have them in mind for) ON TOP OF a sturdy cloth/fabric/plastic/layers of paper - to make it easier to lift them if you decide against them.
White stone reflects A LOT of light, but it also doesn't hold heat as much as darker stones. So when used with plants, it is a good choice for reflecting light "up under" plants and promoting growth with the added angle of the light exposure through reflection, and it's a better choice if you want to incorporate stone but don't want to overheat them like you would with darker stones. White stones are an obvious sharp contrast (which can be a stunning/lovely effect) with darker coloured foliage if you want great contrast (would really make plants stand-out).