Keyboard input line has a white background with a white font, can I change colors?

When the keyboard comes up in Android a single line with the characters you type comes up. Unfortunately it is a white background with white letters. Only when you select the text you can see it. Is there a setting to adjust the font color?
Even better would be that I can disable the line but as I read the documentation this is only possible for iOS.

I have done some extra searching and found the answer myself:

The above solution works, but sometimes you may need to use AppCompatActivity, in this case using UnityThemeSelector will cause a crash.

In this case you can use this theme: Theme.AppCompat.Light.NoActionBar