Thanks GP - Thanks for putting a link to the thread on. When I went to see my dad, he had in fact, got it on high contrast, I turned that off and then I could see a background photograph through the tiles. I then took the photograph off as I wondered if this was causing the problem, but then the majority of the tiles were all blue. When the phone was new out of the box each tile seemed to have its own colouration. I tried the accent colours and themes, all without success. Eventually I decided to do the full reset of the phone - only to find that when it had finished, the colouration was the same. I was surprised because I thought that the reset would take it back to the state the phone was in when it was taken out of the box.
I then went on to the Online Chat support and the guy I got was next to useless. He kept saying to try every colour under the Accent colours, of course all this did was to change all the tiles to the new colour. He did, however, suggest as you had done about the High Contrast, but when I said this was Off, (thanks to your suggestion) he said that he couldn't help any further.
So my dad has got his phone with the majority of the tiles the same colour and I reckon he is going to have to learn to live with it that way, because I don't know how to remedy it for him. He thinks he can send it back to the supplier as faulty. I have tried to explain to him that the phone is not faulty, but my dad is in his 80's and doesn't think it is due to anything he has done:amaze:
Thanks again though for your input. It is a shame he changed some of the settings, because it was great before doing so xx