The theme is the most basic formatting option in Word where everything else builds upon. In the theme, you define the Colors, Fonts, and Paragraph setting.ColorThe theme colors are applied throughout the whole template. New diagrams, hyperlinks, text color are all colored based on these definitions.In a theme, a maximum of six colors can be defined, which are applied for example to a new diagram. In a template, these accent colors should also be used in the style definitions. This ensures, that the colors of heading styles etc. are switched according to the applied theme.FontIn a theme, you can define one font as the 'body' and one as the 'heading' font. For this to work correctly, you have to ensure, that the 'normal' style is based on the 'body' font of the theme.ParagraphFor the paragraph, you define the default spacing setting. As the font choose '+Body' to make sure the style is linked to the theme definition. Additionally, you define the indent and the line spacing which is then used as the default.