Will a 4-month old baby appreciate wooden and colorful toys?

Yes, my babies like wooden toys when they are young. If you intend to purchase wooden toys, make sure you buy non-bleach, naturally made wood instead of artificial one which has been treated with chemical, as young babies tend to put toy into their mouth. For colorful toys, babies definitely like them. Make sure the toys are not choking hazards. I love fisher price toys and munchkin toys which indicate suitable age levels for baby.