Open the keyboard app
Go to Settings
Tap Theme or Appearance
Select Background or Keyboard Background
Choose a color, image, or theme
Adjust brightness or transparency if available
Tap Apply or Save
Open the keyboard to check the new background
Open the keyboard app
Go to Settings
Tap Theme or Appearance
Select Background or Keyboard Background
Choose a color, image, or theme
Adjust brightness or transparency if available
Tap Apply or Save
Open the keyboard to check the new background