How do i get the background colours back, the screen has turned black and apps all white, tried to change it but wont work.

Assuming you are using MS Excel, try going into page setup, sheet, and check the setting for 'print black & white'. If it is checked, then try unchecking it.

Hi, I'm not sure if you mean your print setting - or if you mean your screen is now reversed (night reading feature). I'll try to briefly answer and if not - perhaps you can write again with a little more info. My first guess is that you'd like the night read feature, switched back as pasted here. If SO but you need more info - you might search "how to turn on (off) the night reading feature" on the specific item you are using. This link is for same - on a tablet-and it's to turn it ON. Same steps - to turn OFF (pasted after link):

http://www.labnol.org/software/ipad-night-reading-theme/20538/

Use the Dark Theme for Night-time Reading in any App! iBooks or Instapaper aren't the only apps where you read content. There's your RSS feed reader, your email client and even Safari where you read web pages. Wouldn't it be nice if you could bring iBooks style night-reading mode to all the other apps on your iPad /iPhone? There's an easy workaround.

On your iOS device, tap the Settings icon and choose General - > Accessibility - > Triple-click Home and and set it to "Toggle White on Black."

Press the Home button to exit Settings and launch any reading app. Triple-click the Home button on your iOS device in quick succession and it should enable white-on-black effect quite similar to iBooks Night mode. Triple-click again to switch to normal mode.

Wallpaper app

If you need further help, I’m available over the phone at https://www.6ya.com/expert/richard_b59056c0c62ecb00

magnify the whole thing as much as you can. Then flood fill the area again. Or use clone stamp tool to copy from the finished colour to the new area. Or use brush tool etc

Check and replace its tuner. If you wish to get some details; visit the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/

stop using yellow paper, problem solved

Go to control panel- Display settings- See if Colour mode is 32 bit & 256 colours. try to change the display settings.

Otherwise uninstall- reinstall or upgrade thee display drivers using the Drivers disc or from HP website.

Try system restore if happened recently

go into control panel, display settings and hit 'dafault', should return you to a generic screen. seems like an old model check monitor plugs and video card.

Its an LCD problem. if you have the means to take the phone apart, carefully remove the LCD assembly and clean its contacts and the circuit board pads. If its still the same, only a replacement can solve it.

hi you need to change the font colour of your priter == for this you can go to the properties of the printer and change the colour = this may help you = Good Luck