@brief Deliver a ChangeProperty request to set WM_COLORMAP_WINDOWS property value.
@param c The connection to the X server.
@param wm_colormap_windows The WM_COLORMAP_WINDOWS atom
@param window Window X identifier.
@param list_len Windows list len.
@param list Windows list.
@return The request cookie.
@brief Deliver a ChangeProperty request to set WM_COLORMAP_WINDOWS property value. @param c The connection to the X server. @param wm_colormap_windows The WM_COLORMAP_WINDOWS atom @param window Window X identifier. @param list_len Windows list len. @param list Windows list. @return The request cookie.