My iPhone 14 X-ray, neon and orange font?

For the display, Settings Accessibility. Display & Text Size, make sure Smart Invert, Classic Invert are off and also Settings Accessibility, Per-App Settings make sure no apps have any onvert turned on. If these are all off then go to the section below on pre repair procedures below

Re the camera you will just have to see wht filters you may have on but there is a possibility that the Camera has failed, so see below.

Pre repair Tests.

First thing I advise is to try a Forced restart

Force restart iPhone – Apple Support (UK)

If no better you could Backup, restore to factory, then restore from the backup:-

If no help, set up without restoring backup and test at that point, erase again, then restore from the backup:-

(If the phone needs attention you will have to do this anyway)

If you can import your media to Photos or iTunes in a computer and copy important documents to a cloud server it will give you some resilience in case the restore from backup fails, or you need to ditch the backup and start as new.

See here for the resources you need. Allow a couple of hours:

How to back up your iPhone, iPad, and iPod touch - Apple Support

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

Otherwise arrange a repair for hardware failure

Click here > iPhone Repair & Service - Apple Support

Or

Click here > Contact - Official Apple Support

Anything other than Screen or Battery may be a replacement phone and the price is in the article under "Other damage"

See also: Get your iPhone, iPad, or iPod touch ready for service - Apple Support