I think it is just depending on your taste. I have just post my opinion on Facebook, if you want you can check it out https://www.facebook.com/intotoGreenwich/photos/a.1289745484447783.1073741828.1239784946110504/1451661808256149/?type=3&theater

Yes I would go 'strip handle' as above if a proper handleless was not an option. Wren or cheaper will simply not work . I have designed and helped friends who were on a budget with Howdens kitchens (I'm a qualified interior designer with over 10 years experience in very high end kitchens) , their (Howdens) top of the range collection is really good. Really good mechanisms and drawers (the dark square drawers ) I have not looked at their handleless options so can't comment if it's a 'rail' behind the door like the photo few comments above I would go for it. You would need a proper help with the design and ordering as their 'designers' are not that experienced ... Easiest option get your Wren (if you are happy with it ) quote / design and ask the Howdens designer/ sales person to copy it. ;)

How about contacting a locksmith or window/door repair company for advice. Where are you based? I use a local company called Lock & Glaze for all my repairs. They are based in Herts.

While black can be harsh, it is also quite modern. I don't hate the look of the image you posted below. You could always get fixtures to match to 'soften' it. I think if you only had black handles and the colour wasn't anywhere else it wouldn't go well but if it was integrated into the house, it would be fine.