Is what comes out of a woman's breast – that which is inclined in color to the color of water and not the known natural color of milk – considered رضاعة (suckling/nursing), and does the questioner's son become a brother to the nursed child?

If a child is nursed by your brother's wife five times or more within the first two years, then he becomes her son through suckling and a brother to all her children. It is stipulated that the milk must be pure or predominantly milk. A slight change in its taste, smell, or color (other than yellow or red) does not matter. However, a change to yellow or red does not prohibit [the suckling relationship], because these are not milk.