The ochre of the head runs out past the form.

[Kurigram]

The painting depicts a head and shoulders, a bouquet of red flowers in a dark blue vase sitting upon a bench, a framed drawing of a woman’s head, and an unframed painting or drawing, also of a woman. But what is most striking about the painting is the way Matisse has begun to allow his colors and his forms to play freely, even while they are coordinated. The ochre of the head runs out past the form.

What is the meaning of the bold sentence?

[Beeesneees]

The colour goes outside the lines, just as in the earlier paragraph.
Ochre is a shade of brown. The brown colour which has been used to paint the head goes outside the outline of the head.

[Kurigram]

just as in the earlier paragraph.

What do you mean by it?

The painting depicts a head and shoulders, a bouquet of red flowers in a dark blue vase sitting upon a bench, a framed drawing of a woman’s head, and an unframed painting or drawing, also of a woman. But what is most striking about the painting is the way Matisse has begun to allow his colors and his forms to play freely, [color=red]even while they are coordinated.

I can’t find the flow of the sentence in the red part. Could you please explain it?

[Beeesneees]

@Kurigram

What do you mean by it?

The paragraph which I explained earlier, in your other thread.

The painting depicts a head and shoulders, a bouquet of red flowers in a dark blue vase sitting upon a bench, a framed drawing of a woman’s head, and an unframed painting or drawing, also of a woman. But what is most striking about the painting is the way Matisse has begun to allow his colors and his forms to play freely, [color=red]even while they are coordinated.

I can’t find the flow of the sentence in the red part. Could you please explain it?
[/quote]

The colours work well together (are co-ordinated) even though they stray outside the shapes.