Setting table grid border position via custom json report theme

[janstrauss1]

Dear PowerBi Community,

I'm trying to develop a custom PowerBi report json theme according to the Corporate Identity (CI) of the organisation that I work for.

While I have come across a very helpful github repository at https://github.com/MattRudy/PowerBI-ThemeTemplates, I'm currently struggling to get the tables to look as required by our CI without manual formatting via 'Format visual' using a custom json theme.

According to our CI design tables should have a reddish grid border on the left of the table as shown in the example table below that I can easily achieve via manual formatting as shown:

What I'm currently getting based on my json code snippet below is the following table with reddish grid borders at the top and bottom as shown in the follwong example table:

How do I set the table grid border position in my json file?

I tried via "grid":[{"outline":"LeftOnly"}] but it doesn't seem to have any effect...

Any pointers and suggestions how to set the table grid border position via json would be highly appreciated so that I don't need to manually edit all tables in my reports.

Many thanks in advance!

JSON theme code

"tableEx": {
            "*": {
                "general": [{
                    "responsive": true,
                    "keepLayerOrder": true
                    }],
                "stylePreset": [{ 
                    "name": "ContrastAlternatingRows"
                    }],
                "background": [{
                    "show": false,
					"color": { "solid": { "color": "#ffffff"}},
					"transparency": 0
				}],
				"border": [{
                    "show": false,
					"color": { "solid": { "color": "#d17559"}},
					"radius": 0
				}],
				"title": [{
					"show": true,
					"fontColor": { "solid": { "color": "#d17559" } },
					"background": { "solid": { "color": "#ffffff" } },
					"alignment": "left"
				}],
				"grid": [{
					"gridVertical": false,
					"gridVerticalColor": { "solid": { "color": "#d17559"}},
					"gridVerticalWeight": 1,
					"gridHorizontal": false,
					"gridHorizontalColor": { "solid": { "color": "#ffffff"}},
					"gridHorizontalWeight": 1,
					"rowPadding": 1,
					"outlineColor": { "solid": { "color": "#d17559"}},
					"outlineWeight": 1,
                    "outline": "LeftOnly",
					"textSize": 12,
					"imageHeight": 100
				}],
				"columnHeaders": [{
					"fontColor": { "solid": { "color": "#005b96"}},
					"backColor": { "solid": { "color": "#ffffff"}},
                    "outline": "LeftOnly",
					"autoSizeColumnWidth": true,
					"fontFamily": "Calibri",
					"fontSize": 11,
					"alignment": "Left",
					"wordWrap": true
				}],
				"values": [{
					"fontColorPrimary": { "solid": { "color": "#4f4e51"}},
					"backColorPrimary": { "solid": { "color": "#afd6f2"}},
					"fontColorSecondary": { "solid": { "color": "#4f4e51"}},
					"backColorSecondary": { "solid": { "color": "#ffffff"}},
					"outline": "Frame",
					"urlIcon": true,
					"wordWrap": true,
					"fontFamily": "Calibri",
					"fontSize": 10
				}],
				"total": [{
					"totals": true,
					"fontColor": { "solid": { "color": "#005a96"}},
					"backColor": { "solid": { "color": "#ffffff"}},
					"outline": "Frame",
					"fontFamily": "Calibri",
					"fontSize": 10
				}]
			}

Example Data

Country	Sum of Sales
Canada	24887654885
France	2435417228
Germany	2350534082
Mexico	2094935211
United States of America	25029830165