Just resign and send your colleague's notebook black. Black is a relatively stable and solemn color, which is usually considered as a color suitable for business occasions. Therefore, if you quit your job, give a colleague a notebook, and choose black as the color of the gift, it can reflect your professionalism and professional image to a certain extent, and also convey a more solemn and serious attitude. In addition, black has other advantages, such as:

1, high-grade: black gives people a noble and high-grade feeling, suitable for some high-grade occasions.

2, easy to match: black is a more versatile color, can be matched with other colors, and it is very easy to match different styles of effects.

3, not easy to get dirty: Compared with other colors, black is not easy to be polluted by stains or dust, so it is easier to keep clean.