If you create style templates in the administration and transfer them to your templates and lists, changes (corporate identity) will only need to be applied in one place in future.
Go to the Administration tab in the function bar and select Settings > Text template.
Enter a text in the text field. Note: this is about creating font styles, the text entered here is irrelevant, just a few letters are sufficient.
Format the text using the tools in the horizontal bar. (colour, font, font size, underline, etc.)
Select the text and click on the expand triangle next to Style sheet > New text style sheet.
Enter a unique name for the style sheet and confirm the entry by clicking on OK.
Save your input by clicking on the icon in the top left-hand corner of the input window.