The height of a dashboard widget is fixed as a multiple of the height of a row in the ui-page theme (48, 36 or 32 pixels).
The widget is rendered as a variable width according to the browser window and whether or not the page navigation sidebar is displayed.
Therefore the widget contents are variable size to maintain the appearance.
The background colour varies according to the current temperature.
These colours are definitely not the best choice, especially the very hot one, which I think should be more of an Aussie desert red.
The weather alert text is not legible on this magenta background either.
