A good tile installer that knows what he is doing, can easily remove that single piece of tile.... carefully replace it with another one. Do you have another extra pieces of the same tile? Do you know what brand and color the existing grout is? That will be more of the issue trying to get the grout match to match up or the finding the same tile (in the same dye lot) if you need to buy another tile. Did the heat cause the break or did a pan bang into the glass? Consider installing a heat resistant Lumicor or 3 Form panel behind the stove. Any flat material that can be sandwiched between two resin panels. 1). Crushed glass. 2). Fabric. 3). Fabric. 4). Fabric.

I would recommend a soft gray...see photo below...

We have done it a few times. The greatest breakage chance is around the electrical plug locations. Care needs to be taken that the voids are filled and that the metal is kept from making contact wit the glass. A little care here makes using the plugs safer and adds less stress on the glass. Not all paints are equal. Make sure you check the references of the installer. this look can go horribly wrong if a newbie is in charge of the painting.

http://www.dream-kitchen-backsplash.com/stainless-steel-backsplash.html#sthash.WylmRsLc.dpbs The Benefits of Stainless Steel: Easy to clean Unaffected by heat Attractive Lasts for a lifetime Does not corrode or get darker with age The Downsides of Stainless Steel: Expensive Can be dented This article did state that the gauge (thickness) of the steel used, determined how easily it might dent... Can be scratched May require polishing to rejuvenate it's luster - See more at: http://www.dream-kitchen-backsplash.com/stainless-steel-backsplash.html#sthash.WylmRsLc.dpuf