On which branches of the crown do the leaves first change color?

The color of the leaves changes due to insufficient sunlight. Chloroplasts are modified into chromatophores, which give color to the leaves. First of all, the color changes where there is the least light, that is, on the lower branches, closer to the crown. But this process is very difficult to notice. If we observe the leaves, we will see how the color changes almost simultaneously. Only in some natural areas with a specific climate can one see how the color of leaves changes gradually, depending on their location.