fillColor is not respected when passed in curly braces IconStatusRunningOutline

[mabela416]

In IconStatusRunningOutline and possibly other icons, if you pass the fillColor inside curly braces, it doesn't respect it. This includes passing it as a variable as well

      <IconStatusRunningOutline
        fillColor={'gray-800'}
        size="16"
      />

or

      const gray800 = 'gray-800';
      <IconStatusRunningOutline
        fillColor={gray800}
        size="16"
      />

Passing fillColor only works when passed as a string

      <IconStatusRunningOutline
        fillColor='gray-800'
        size="16"
      />

[elevatebart]

I will see what I can do.
The solution might very well be to document the edge case on the design system website.