Function setWindowColours

src/OpenLoco/src/Ui/WindowManager.cpp:71–76

    }

    void setWindowColours(WindowColour slot, AdvancedColour colour)
    {
        const auto index = static_cast<size_t>(slot);
        assert(index < _windowColours.size());
        _windowColours[index] = colour;
    }

    AdvancedColour getWindowColour(WindowColour slot)
    {