Change layout of Gboard (space between letters)

Question

I have installed Gboard on my Android 7 device. My keyboard looks now like following:

Is it possible to change the layout in something like the following? I mean the gaps between the characters, i.e. each letter should be in its own box.

Answer 1

You can change to another theme/layout in the settings.

Here's a how-to guide.

If you want to build a completely custom keyboard that's more work but also possible.