Use the selector to choose a theme for this session:
The 11 variations for this theme are shown on the left. For each colour there is also a corresponding text and border colour. These do not affect the backgrounds.
The styles for these look like: w3-theme-l2-txt or w3-theme-d4-bdr .
There are some hover colours based on the theme, lightest, darkest and theme colours only. These look like w3-theme-l5-hvr .
The last example shows the use of the style w3-bottombar. There is also w3-topbar, w3-leftbar & w3-rightbar. To use borders, you also need to apply the style 'w3-border'.