Is it possible to have a line with gap with a fill inbetween

[teifler]

Hey Team,

I want to draw a polygon with the type line on the map but to the inside I need a filling (like a padding). Is that something what is possible? I found line with gap but instead of that second line I just need filling until the gap ends. I that something which is possible?

1.  Is it possible to add a gap after the line and fill it with color and opacity?
   

2.  Is it possible to stripe that gap like in the example screenshot below
   

I want to have a fill inbetween the lines (gap), and if possible dont even have the second line but the fill should stop there

code Example
map.addLayer( { id: "color-layer", type: "line", source: "color-source", layout: {}, paint: { "line-color": "#8CF5FF", "line-gap-width": 10, }, }, colorFirstLayerId ); },

Any help is much appreciated!