Sometimes we want to create an exceptions UI that is beyond the regular options of the tool.
Specifically, something like this:
Let's see what was created by default and what is a customization...
To create the square near the "% profit" I used the standard Conditional Formatting:

How does it work? The red square and many others are valid characters... I only use them. See examples here:
https://unicodeplus.com/U+1F7E5
or here:
https://www.compart.com/en/unicode/U+1F7E9
The remaining problem is the Oracle Analytics automatic column width. The above-mentioned squares need more space than regular character.
As a "quick and dirty" work around I forced a longer column title:
You can always use "hard space" to force the longer header. Like this: " The percent of profit"
Useful examples:
Orange Circle 1F7E0 - 馃煚
Yellow Circle 1F7E1 - 馃煛
Green Circle 1F7E2 - 馃煝
Purple Circle 1F7E3 - 馃煟
Brown Circle 1F7E4 - 馃煠
Red Sq. 1F7E5 - 馃煡
Blue Sq. 1F7E6 - 馃煢
Orange Sq. 1F7E7 - 馃煣
Yellow Sq. 1F7E8 - 馃煥
Green Sq. 1F7E9 - 馃煩
Purple Sq. 1F7EA - 馃煪
Brown Sq. 1F7EB - 馃煫
Blue Heart 1F499 - 馃挋
Green Heart 1F49A - 馃挌
Yellow Heart 1F49B - 馃挍
Purple Heart 1F49C - 馃挏
Heart Decor 1F49F - 馃挓
White star 2B50 - ⭐
Manual W-Chair 1F9BD - 馃 267F - ♿
Nine Branches 1F54E - 馃晭