画像については解らないので、テーブルの色変えについてのみ
最新のPythonのライブラリ側に不具合がある為、Python 3.7.2, 3.6以前のバージョンになりますが、
Table Element の 引数で指定可能です。
- background_color
- alternating_row_color
[PySimpleGUI-tk] issue w/ Table Colors. Doesn't show table colors when running Python 3.7.4. OK on 3.7.2
PySimpleGUI document - Table Element
Known table colors in Python 3.7.3, 3.7.4, 3.8, ?
The tkinter that's been released in the past several releases of Python has a bug. Table colors of all types are not working, at all. The background of the rows never change. If that's important to you, you'll need to downgrade your Python version. 3.6 works really well with PySimpleGUI and tkinter.