Calling `themeColor` outside of styled CSS context (within Javascript / React Component)

[gilleswittenberg]

Describe the bug Calling themeColor within a React Component (not within a styled CSS context). E.g. themeColor('primary', 'main'), as documented here: https://amsterdam.github.io/amsterdam-styled-components/?path=/docs/ui-icon--colors. Throws the following TypeScript Error:

Type '({ theme }: { theme: ThemeInterface; }) => string' is not assignable to type 'string'.  TS2322

To Reproduce

"@datapunt/asc-ui": "^0.23.0"

import React, { FC } from "react"
import { themeColor, ascDefaultTheme } from "@datapunt/asc-ui"
const C: FC = () => {
  themeColor('primary', 'main')
  // themeColor('primary', 'main')({ theme: ascDefaultContext }) // this works
}

Expected behavior We would like to be able to call this without passing in the (default) theme. Having it pick up the actual theme supplied by ThemeProvider