It will change.
1. Kittens usually open their eyes around 8 to 14 days after birth. After opening their eyes, they often have a bluish-gray film, commonly known as the blue membrane. This is normal; this film helps the kitten gradually adapt to light stimulation and protects its eyes. The blue membrane usually fades away around three months of age. The final color depends on the kitten's breed; different breeds have different eye colors, such as blue, yellow, green, brown, etc.
2. The color change of a cat's eyes is affected by the melanin in its iris. If there is less melanin in the iris, the cat's eyes will be blue. 
How to feed a kitten:
1. Keep your kitten warm, especially in winter, as kittens are prone to catching colds and getting chilled.
2. In terms of diet, avoid feeding too many different kinds of food. Kittens can be fed some kitten milk cake and goat milk powder, which can help with digestion and growth.
3. Kittens are very clingy and insecure, and need their owner's company.
4. Newborn kittens only need to drink their mother's milk, or they can be fed with goat milk powder. When feeding, you can stop feeding when you see the kitten's belly bulge slightly. Kittens should be fed small meals frequently.
