Donkey Kong Jr. Panorama has now been preserved in MAME.
The game is based on the SM511 and uses an inversed screen where the lit segments become transparent. The colors are provided by a colored inlay.
This is what the game looks like:
Basic artwork providing colors for the display can be downloaded from this dropbox (gnw_dkjrp/artwork): https://www.dropbox.com/sh/kkgf101f9ljlb41/AAAh3lW0jMZ0ykHqz4AQtgkYa?dl=0
To make the game display look more like the original, the black background isn't 100% black but instead very dark grey which makes it a bit translucent.
The three small dots under "Game A" isn't a mistake and they exist on the original display and are mapped to specific segments. The original game hides them using a block box on the inlay.