Styling

Various parts of the bottom can be styled, using either built-in themes or custom theming.

Precedence

As there are a few ways styles can be applied to bottom, the order of which styles are prioritized are, in order of highest precedence to lowest precedence:

Built-in themes set via command-line args (e.g. btm --theme gruvbox)
Custom themes set via config file
Built-in themes set via config file

If nothing is set, it will fall back to the default theme.

Built-in styles

bottom has a few built-in themes:

Default
Nord
Gruvbox

These themes all also have light variants to support terminals using lighter colours.

To set the theme from the command line:

bash

btm --theme gruvbox

To set the theme using the config file:

toml

[styles]
theme = "gruvbox"

Custom styling

bottom's components can also be individually styled by the user to control the colour of the text style.

Colours

You can configure the colours for components with strings that are either hex colours (e.g. "#ffffff"), RGB colours (e.g. "255, 255, 255"), or named colours. Named colours are one of the following strings:

"Black"
"Red"
"Green"
"Yellow"
"Blue"
"Magenta"
"Cyan"
"Gray"
"DarkGray"
"LightRed"
"LightGreen"
"LightYellow"
"LightBlue"
"LightMagenta"
"LightCyan"
"White"

Text

Text can generally be styled using the following TOML table:

toml

[field]
# The foreground colour of text.
color = "black"

# The background colour of text.
bg_color = "blue"

# Whether to make the text bold.
bold = false

# Inline table version
field = { color = "black", bg_color = "blue", bold = false }

All fields are optional; by default if bg_color is not set then there will be no background color.

If you just want to style text by setting the foreground colour, for brevity, then you can also just set the field to be the colour itself. For example:

toml

[styles.widgets]
selected_text = "#fff"

Configuration

CPU

These can be set under [styles.cpu]:

Config field	Details	Examples
`all_entry_color`	The colour of the "All" CPU label	`all_entry_color = "Red"`
`avg_entry_color`	The colour of the average CPU label and graph line	`avg_entry_color = "255, 0, 255"`
`cpu_core_colors`	Colour of each CPU threads' label and graph line. Read in order.	`cpu_core_colors = ["Red", "Blue", "Green"]`

Memory

These can be set under [styles.memory]:

Config field	Details	Examples
`ram_color`	The colour of the RAM label and graph line	`ram_color = "Red"`
`cache_color`	The colour of the cache label and graph line. Does not do anything on Windows.	`cache_color = "#ffffff"`
`swap_color`	The colour of the swap label and graph line	`swap_color = "255, 0, 255"`
`arc_color`	The colour of the ARC label and graph line	`arc_color = "Blue"`
`gpu_colors`	Colour of each GPU's memory label and graph line. Read in order.	`gpu_colors = ["Red", "Blue", "Green"]`

Network

These can be set under [styles.network]:

Config field	Details	Examples
`rx_color`	The colour of the RX (download) label and graph line	`rx_color = "Red"`
`tx_color`	The colour of the TX (upload) label and graph line	`tx_color = "#ffffff"`
`rx_total_color`	The colour of the total RX (download) label in basic mode	`rx_total_color = "0, 0, 0"`
`tx_total_color`	The colour of the total TX (upload) label in basic mode	`tx_total_color = "#000"`

Battery

These can be set under [styles.battery]:

Config field	Details	Examples
`high_battery_color`	The colour of the battery widget bar when the battery is over 50%	`high_battery_color = "Red"`
`medium_battery_color`	The colour of the battery widget bar when the battery between 10% to 50%	`medium_battery_color = "#ffffff"`
`low_battery_color`	The colour of the battery widget bar when the battery is under 10%	`low_battery_color = "0, 0, 0"`

Tables

These can be set under [styles.tables]:

Config field	Details	Examples
`headers`	Text styling for table headers	`headers = { color = "red", bg_color = "black", bold = true }`

Graphs

These can be set under [styles.graphs]:

Config field	Details	Examples
`graph_color`	The general colour of the parts of the graph	`graph_color = "white"`
`legend_text`	Text styling for graph's legend text	`legend_text = { color = "black", bg_color = "blue", bold = true }`

General widget settings

These can be set under [styles.widgets]:

Config field	Details	Examples
`border_color`	The colour of the widgets' borders	`border_color = "white"`
`selected_border_color`	The colour of a widget's borders when the widget is selected	`selected_border_color = "white"`
`widget_title`	Text styling for a widget's title	`widget_title = { color = "black", bg_color = "blue", bold = true }`
`text`	Text styling for text in general	`text = { color = "black", bg_color = "blue", bold = true }`
`selected_text`	Text styling for text when representing something that is selected	`selected_text = { color = "black", bg_color = "blue", bold = true }`
`disabled_text`	Text styling for text when representing something that is disabled	`disabled_text = { color = "black", bg_color = "blue", bold = true }`
`thread_text`	Text styling for text when representing process threads. Only usable on Linux at the moment.	`thread_text = { color = "green", bg_color = "blue", bold = true }`