# [◀ Excalidraw Automate How To](../readme.md)
## Canvas style settings
Sets the properties of the canvas. 

### theme, setTheme()
String. Valid values are "light" and "dark".

`setTheme()` accepts a number:
- 0: "light"
- any other number: "dark"

### viewBackgroundColor
String. This is the fill color of an object. [CSS Legal Color Values](https://www.w3schools.com/cssref/css_colors_legal.asp)

Allowed values are [HTML color names](https://www.w3schools.com/colors/colors_names.asp), hexadecimal RGB strings e.g. `#FF0000` for red, or `transparent`.

### gridSize
Number. The size of the grid. If set to zero, no grid is displayed.