The idea is to add some options to set the color of a folder in SharePoint.

Commands to update

• spo folder add

Options to add

Remarks:

When you specify a value for color, consider the following:

Examples

Create a folder with a dark blue look

m365 spo folder add --webUrl https://contoso.sharepoint.com --parentFolder '/ProjectFiles' --name 'Project-x' --color 5

Create a folder with a light teal look

m365 spo folder add --webUrl https://contoso.sharepoint.com --url '/ProjectFiles/Project-x' --color lightTeal

Technical approach

Let's change the current API since it doesn't allow us to stamp the color of a folder. Changing to the API below doesn't change the output generated, so it's not a breaking change.
Setting the folder color is easy, you just have to set the ColorHex field to a number between 0-15.

POST https://tenant.sharepoint.com/sites/MySite/_api/foldercoloring/createfolder(DecodedUrl='/sites/MySite/Projects/Project-x', overwrite=false)
{
  "coloringInformation": {
    "ColorHex": "3"
   }
}

Notice that this API only works when a color is specified. We could either stick with the old API when no color is specified, or we can just pass 0 with the new API to stamp the folder color "yellow".