Stamina bar, assembled from images extracted from the game files
This isn't the actual bar, because the actual bar is dynamically created by the game.
What is in the game data files is a black image, which is the border, and a white image, which is dynamically coloured by the game, depending on your current Stamina level. I put the two images together, and tinted it yellow.
It's not the exact same yellow, but it is pretty close. This specific yellow is the yellow used by map bookmarks.