We have installed wallpaper behind glass splash backs on many occasions without any problems, the glass usually being attached by a thin beading of clear silicon applied around the inside perimeter of he glass, then fitted the day after the wallpaper install. MOST importantly the INSIDE of the glass be kept perfectly clean on install as even fingerprints will stand out

Consider a glass mosaic tile in white. It will keep your all white but adds a touch of bling to liven the kitchen up. Some also have barely there colour in them if you don't want all white but don't actually want a specific colour. Sorry the photo attachment no longer works for me https://www.google.com.au/search?q=photos+of+white+glass+mosaic+tiles&espv=2&biw=1242&bih=585&tbm=isch&tbo=u&source=univ&sa=X&ved=0CCEQsARqFQoTCNjQgIvSucgCFYIrpgodw6cNVQ

Hi Jacey Eve, How is your splashback coming along? We are the manufacturers of the Pressed Tin Panels product (yes we sell it too - but believe we know what we are talking about- most of us who work here have a pressed metal splashback at home too!) I believe the great responses have covered what we would recommend for the panels as a splashback and that is the powder coating. It makes them a non-porous and easy to clean surface as well as a long lasting, good looking surface. With basic care it will remain that way for many,many years to come. We believe it is very competitively priced and an easy DIY product to install. If we can provide you (or anyone else reading this) a sample, prices, details of stockists, an install guide or a quote just let me know mardi@pressedtinpanels.com Visit our website for more info and ideas: www.pressedtinpanels.com Regards Mardi

My two cents worth would be to extend the tiles to cover everything below the canopy of the extractor (could go higher but that would be the minimum) and use that as your level on the other wall. So you ignore the curved glass (I assume that that's kind of the point of being transparent) and go with the straight edges of the tiles. You certainly wouldn't want a funny little segment of painted wall below the curved glass – it will look awkward and be very difficult to keep clean. My remaining concern is – have you already installed the rangehood or can it be easily taken back down to allow the tiler to do a really good, neat job and then the rangehood can be installed nice and tight against the tiles?