Change the colour of Keyboard in iphone

Hi is there any way of changing the colour of keyboard or we have to get some custom keyboard for it , any suggestions?

How do I customize my iPhone keyboard?

Assign an alternative layout to a keyboardGo to Settings > General > Keyboard > Keyboards. Tap a language at the top of the screen, then select an alternative layout from the list.

Can I change the color of my keyboard on my phone?

Android phones don't require third-party apps, as they already allow you to change keyboard color. However, iPhone users can use third-party apps to create a similar effect. Here's how to do so using Gboard, Google's keyboard app. Install the Gboard app from the App Store.

You might want to have a look at A custom keyboard, the easy way.

Basically, use the default keyboard and overlay it with an image.