proc broColorToString(v: Value): string {....raises: [ValueError], tags: [],
    forbids: [].}

proc initColors(script: Script; systemModule: Module): Module {.
    ...raises: [KeyError, CodeGenError, ValueError], tags: [], forbids: [].}

proc newBroColor(col: Color; raw: string = ""): Value {....raises: [], tags: [],
    forbids: [].}

proc resolveBroColor(v: Value): BroColor {....raises: [ValueError], tags: [],
    forbids: [].}

proc resolveColor(v: Value): Color {....raises: [ValueError], tags: [], forbids: [].}