Set the background color attribute.
These attributes set the bright named colors. The black color is a grey darker than the non bright "white".
| 100 | bright "black" |
| 101 | bright red |
| 102 | bright green |
| 103 | bright yellow |
| 104 | bright blue |
| 105 | bright magenta |
| 106 | bright cyan |
| 107 | bright white |
In practice these colors can be customized or selected from a theme in most terminals. The exact values can vary wildly.
🛆 This is just an alias to the non bright background colors.