How can I change outline color of billboard?

I want to change outline color of billboard.

If I set color property of billboard it change the fill color of billboard not the outline.
I set the color property of billboard to “Sky” It applied to fill color of billboard and outline color is still black, I want color to get applied on outline.
See the “Image 2” Image 2

So is there anything to change the outline color of billboard?

If I understand the question correctly. I think it’s easier to change the image itself. Each color has its own css code, if we talk about Color. Open Photoshop, copy the color code and paint over.

No I can’t change the image It is being used in different places in project, I want to change the cesium billboard.

Can you show the CesiumJS code you’re using currently to add the outline to your billboards? If you can share a Sandcastle example if your scene that would help. See: How to share custom Sandcastle examples

I am passing attached image to the billboard.

and using below code to add billboard.

var iconEntity = viewer.dataSources._dataSources[0].entities.add({
id: “xyz”,
position: Cesium.Cartesian3.fromDegrees(latLngArray[0], latLngArray[1]),
billboard: {
image: “~/images/Tactical/MissionGraphics/Default/Air%20Assault.svg”,
width: 55,
height: 55,
heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
verticalOrigin: Cesium.VerticalOrigin.CENTER,
horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
alignedAxis: Cesium.VelocityVectorProperty(Cesium.Cartesian3.fromDegrees(latLngArray[0], latLngArray[1]))

As attached image contains arrow, i want to apply color on that. Please suggest. Thanks!