Dark Time & Date 0n Lock Screen

Hey zardozzy,

We'd recommend reviewing this article as it provides steps to help change how the time appears on your Lock Screen: Create a custom iPhone Lock Screen - Apple Support

"Change the clock style on the Lock Screen

You can change the font and color of the date and time on your Lock Screen.

1. Touch and hold the Lock Screen until the Customize button appears at the bottom of the screen.
2. Swipe to go to the Lock Screen you want to change, tap Customize, then tap the Lock Screen image.
3. Tap the time, then choose a font and color.

To reset the date and time, see Change the date and time on iPhone."

If you need further assistance with that, contact Apple Support here: Get Support

Thanks!