Any cat that is a color-pointed breed (like a Ragdoll, Birman, Himalayan, Siamese, etc.) will color later in life basically because the point gene reacts to the surrounding warmth.
The moment the kittens start to be exposed to the lower ambient temperature they start to color. Since their extremities will tend to be colder, they will color the fastest.
Some full-grown Ragdolls will be a hint lighter in summer than in winter. Any cat that is a point will color later in life because the point gene reacts to the surrounding warmth.