用來在線條裡隨機塗色,作為選取遮罩。
Use to paint random colors inside your linework to be used as selection masks.
CLOW (剪貼工作室繪圖遮罩工具)

我只是做了這個刷子,讓「小丑通道」更容易完成。
這是我使用的一種進階遮罩技術,能將畫中所有形狀分隔在一個隨機的色彩島上,作為選取遮罩。
只要把線條設為參考圖層,然後開始點點你畫中不同的形狀。每次點綴會塗上不同的顏色;Shapes 沒有抗鋸齒,所以你可以從裡面取得乾淨的遮罩。
下面的動圖是使用方法的縮時剪輯:

說明:
(1) 將線條設定為 參考層很重要;
(2) 使用Clow筆時,偏好 較大的筆刷 尺寸,以覆蓋整個形狀;
(3) 筆刷會自動停留在線條內——只要記得筆觸放在形狀中央;如果你強行把油漆塗到外面,它就會。
(4) 每一次輕敲/刷觸都會繪製一種新的隨機顏色
(5) 子工具面板中唯一顯示的選項是 面積縮放;如果你想讓彩色圖形在線條後方「生長」,它會增加數值
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在這支舊影片中,我試著示範如何使用這個小丑過關技巧。
雖然是葡萄牙文,但你應該能從中了解一些。
——>> https://www.youtube.com/watch?v=P8hpzwjFKOs
——>> https://www.youtube.com/watch?v=P8hpzwjFKOs
CLOW (a Masking Tool for Clip Studio Paint)

I just made this brush to make the 'Clown Pass' easier.
This is an advanced masking technique I use that separates all shapes of the drawing on a random color island that I can use as a selection mask.
Just set your line as reference layer and start dabbing on the different shapes of your drawing. Each dab paints a different color; shapes has no antialiasing so you can retrieve a clean mask from it.
The gif below is a timelapse in how to use it:

INSTRUCTIONS:
(1) It's important to set your linework as Reference Layer;
(2) When using the Clow brush, prefer a large brush size so it covers the entirety of a shape;
(3) The brush stays inside the lines automatically - just remember to place the brushstroke in the center of the shape; if you force paint outside, it'll.
(4) Each tap/brushstroke paints a new, random color
(5) The only option exposed in the subtool panel is Area Scaling; it increase the value if you want the colored shapes to "grow" behind the linework
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In this old video I tried to demonstrate how I'll use this Clown Pass technique.
It´s in Portuguese BUT you should get some idea from it.
-->> https://www.youtube.com/watch?v=P8hpzwjFKOs
-->> https://www.youtube.com/watch?v=P8hpzwjFKOs