I have a color picker to choose the background color of a rectangle in a Figma-like editor.
One of the colors is white rgba(255,255,255,1), and another one is transparent rgba(0,0,0,0).
On the image below, the right-most color choice is transparent, and the one just before is white.
Question : How to represent the transparent color so that there is no confusion with the white color ?
Thanks !