Something is pale if it lacks color, or is close to white. The girl in the picture has pale skin. The opposite of pale is dark.
Something is pastel if it is a soft, pale color. Pastels are normally used on clothes and bedding for babies.
Someone is pedantic if they are overly concerned with the details of things, or getting things exactly perfect. The owner of this letterbox is pedantic.
Something is peeled if it has had its peel or skin removed. Peeled is also the past tense of peel.
Something is permanent if it will last forever, or for a very, very long time. The hand prints made in the concrete in the picture will be there permanently. The opposite of permanent is temporary.
Something is pinned if it is held in place by something, usually by a pin. You can pin something down without pins, for example "her hands were pinned to her sides".