Change the Theme in Jupyter Notebook?

This is easy to do using the jupyter-themes package by Kyle Dunovan. You may be able to install it using conda. Otherwise, you will need to use pip.

Install it with conda:

conda install -c conda-forge jupyterthemes

or pip:

pip install jupyterthemes

You can get the list of available themes with:

jt -l

So change your theme with:

jt -t theme-name

To load a theme, finally, reload the page. The docs and source code are here.

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Follow these steps

Install jupyterthemes with pip:

pip install jupyterthemes

Then Choose the themes from the following and set them using the following command, Once you have installed successfully, Many of us thought we need to start the jupyter server again, just refresh the page.

Set the theme with the following command:

jt -t <theme-name>

Available themes:

onedork

grade3

oceans16

chesterish

monokai

solarizedl

solarizedd

Screens of the available themes are also available in the Github repository.

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After I changed the theme it behaved strangely. The font size was small, cannot see the toolbar and I really didn't like the new look.

For those who want to restore the original theme, you can do it as follows:

jt -r

You need to restart Jupyter the first time you do it and later refresh is enough to enable the new theme.

or directly from inside the notebook

!jt -r

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Instead of installing a library inside Jupyter, I would recommend you use the 'Dark Reader' extension in Chrome (you can find 'Dark Reader' extension in other browsers, e.g. Firefox). You can play with it; filter the URL(s) you want to have dark theme, or even how define the Dark theme for yourself. Below are couple of examples:

https://i.stack.imgur.com/PBqOq.png

https://i.stack.imgur.com/ZtvSr.png

I hope it helps.

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You can do this directly from an open notebook:

!pip install jupyterthemes
!jt -t chesterish

Restart the jupyter server for the theme's application

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Simple, global change of Jupyter font size and inner & outer background colors (this change will affect all notebooks).

In Windows, find config directory by running a command: jupyter --config-dir

In Linux it is ~/.jupyter

In this directory create subfolder custom Create file custom.css and paste:

/* Change outer background and make the notebook take all available width */
.container {
    width: 99% !important;
    background: #DDC !important;
}   

/* Change inner background (CODE) */
div.input_area {
    background: #F4F4E2 !important;
    font-size: 16px !important;
}

/* Change global font size (CODE) */
.CodeMirror {
    font-size: 16px !important;
}  

/* Prevent the edit cell highlight box from getting clipped;
 * important so that it also works when cell is in edit mode */
div.cell.selected {
    border-left-width: 1px !important;
} 

Finally - restart Jupyter. Result:

https://i.stack.imgur.com/PyqUg.png

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For Dark Mode Only: -

I have used Raleway Font for styling

To C:\User\UserName\.jupyter\custom\custom.css file

append the given styles, this is specifically for Dark Mode for jupyter notebook...

This should be your current custom.css file: -

/* This file contains any manual css for this page that needs to override the global styles.
    This is only required when different pages style the same element differently. This is just
    a hack to deal with our current css styles and no new styling should be added in this file.*/

#ipython-main-app {
    position: relative;
}

#jupyter-main-app {
    position: relative;
}

Content to be append starts now

.header-bar {
    display: none;
}

#header-container img {
    display: none;
}

#notebook_name {
    margin-left: 0px !important;
}

#header-container {
    padding-left: 0px !important
}

html,
body {
    overflow: hidden;
    font-family: OpenSans;
}

#header {
    background-color: #212121 !important;
    color: #fff;
    padding-top: 20px;
    padding-bottom: 50px;
}

.navbar-collapse {
    background-color: #212121 !important;
    color: #fff;
    border: none !important
}

#menus {
    border: none !important;
    color: white !important;
}

#menus .dropdown-toggle {
    color: white !important;
}

#filelink {
    color: white !important;
    text-align: centerimportant;
    padding-left: 7px;
    text-decoration: none !important;
}

.navbar-default .navbar-nav>.open>a,
.navbar-default .navbar-nav>.open>a:hover,
.navbar-default .navbar-nav>.open>a:focus {
    background-color: #191919 !important;
    color: #eee !important;
    text-align: left !important;
}

.dropdown-menu,
.dropdown-menu a,
.dropdown-submenu a {
    background-color: #191919;
    color: #fff !important;
}

.dropdown-menu>li>a:hover,
.dropdown-menu>li>a:focus,
.dropdown-submenu>a:after {
    background-color: #212121;
    color: #fff !important;
}

.btn-default {
    color: #fff !important;
    background-color: #212121 !important;
    border: none !important;
}

.dropdown {
    text-align: left !important;
}

.form-control.select-xs {
    background-color: #191919 !important;
    color: #eee !important;
    border: none;
    outline: none;
}

#modal_indicator {
    display: none;
}

#kernel_indicator {
    color: #fff;
}

#notification_trusted,
#notification_notebook {
    background-color: #212121;
    color: #eee !important;
    border: none;
    border-bottom: 1px solid #eee;
}

#logout {
    background-color: #191919;
    color: #eee;
}

#maintoolbar-container {
    padding-top: 0px !important;
}

.notebook_app {
    background-color: #222222;
}

::-webkit-scrollbar {
    display: none;
}

#notebook-container {
    background-color: #212121;
}

div.cell.selected,
div.cell.selected.jupyter-soft-selected {
    border: none !important;
}

.cm-keyword {
    color: orange !important;
}

.input_area {
    background-color: #212121 !important;
    color: white !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.cm-def {
    color: #5bc0de !important;
}

.cm-variable {
    color: yellow !important;
}

.output_subarea.output_text.output_result pre,
.output_subarea.output_text.output_stream.output_stdout pre {
    color: white !important;
}

.CodeMirror-line {
    color: white !important;
}

.cm-operator {
    color: white !important;
}

.cm-number {
    color: lightblue !important;
}

.inner_cell {
    border: 1px thin #eee;
    border-radius: 50px !important;
}

.CodeMirror-lines {
    border-radius: 20px;
}

.prompt.input_prompt {
    color: #5cb85c !important;
}

.prompt.output_prompt {
    color: lightblue;
}

.cm-string {
    color: #6872ac !important;
}

.cm-builtin {
    color: #f0ad4e !important;
}

.run_this_cell {
    color: lightblue !important;
}

.input_area {
    border-radius: 20px;
}

.output_png {
    background-color: white;
}

.CodeMirror-cursor {
    border-left: 1.4px solid white;
}

.box-flex1.output_subarea.raw_input_container {
    color: white;
}

input.raw_input {
    color: black !important;
}

div.output_area pre {
    color: white
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: white !important;
    font-weight: bolder !important;
}

.CodeMirror-gutter.CodeMirror-linenumber,
.CodeMirror-gutters {
    background-color: #212121 !important;
}


span.filename:hover {
    color: #191919 !important;
    height: auto !important;
}

#site {
    background-color: #191919 !important;
    color: white !important;
}

#tabs li.active a {
    background-color: #212121 !important;
    color: white !important;
}

#tabs li {
    background-color: #191919 !important;
    color: white !important;
    border-top: 1px thin #eee;
}

#notebook_list_header {
    background-color: #212121 !important;
    color: white !important;
}

#running .panel-group .panel {
    background-color: #212121 !important;
    color: white !important;
}

#accordion.panel-heading {
    background-color: #212121 !important;
}

#running .panel-group .panel .panel-heading {
    background-color: #212121;
    color: white
}

.item_name {
    color: white !important;
    cursor: pointer !important;
}

.list_item:hover {
    background-color: #212121 !important;
}

.item_icon.icon-fixed-width {
    color: white !important;
}

#texteditor-backdrop {
    background-color: #191919 !important;
    border-top: 1px solid #eee;
}

.CodeMirror {
    background-color: #212121 !important;
}

#texteditor-backdrop #texteditor-container .CodeMirror-gutter,
#texteditor-backdrop #texteditor-container .CodeMirror-gutters {
    background-color: #212121 !important;
}

.celltoolbar {
    background-color: #212121 !important;
    border: none !important;
}

https://i.stack.imgur.com/ki59k.png

https://i.stack.imgur.com/V3UXJ.png

---

Use FireFox Plug-in "Darker Jupyter".

---

!pip install jupyterthemes

Run this library:

from jupyterthemes import get_themes
import jupyterthemes as jt
from jupyterthemes.stylefx import set_nb_theme

and this:

set_nb_theme('monokai')

themes:

'monokai', 'chesterish', 'oceans16', 'solarizedl', 'solarizedd', 'grade3', 'onedork'

---

You Can Follow These Steps.

pip install jupyterthemes or pip install --upgrade jupyterthemes to upgrade to latest version of theme. after that to list all the themes you have :jt -l after that jt-t for example jt -t solarizedl

---

To install the Jupyterthemes package directly with conda, use:

conda install -c conda-forge jupyterthemes

Then, as others have pointed out, change the theme with jt -t <theme-name>

---

My complete solution:

1) Get Dark Reader on chrome which will not only get you a great Dark Theme for Jupyter but also for every single website you'd like (you can play with the different filters. I use Dynamic).

2) Paste those lines of code in your notebook so the legends and axes become visible:

from jupyterthemes import jtplot
jtplot.style(theme='monokai', context='notebook', ticks=True, grid=False)

You're all set for a disco coding night !

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conda install jupyterthemes

did not worked for me in Windows. I am using Anaconda.

But,

pip install jupyterthemes

worked in Anaconda Prompt.

---

You can change themes using set_nb_theme from your running notebook

!pip install jupyterthemes

from jupyterthemes import get_themes
import jupyterthemes as jt
from jupyterthemes.stylefx import set_nb_theme

set_nb_theme('chesterish')

pasting from https://www.kaggle.com/getting-started/97540

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If there is anyone interested in running the anaconda in docker with themes enabled

docker run -t --rm -p 8888:8888 -v $(pwd):/opt/notebooks continuumio/anaconda3 /bin/bash -c "pip install jupyterthemes; jt -t onedork; /opt/conda/bin/jupyter notebook --ip=0.0.0.0 --port=8888 --notebook-dir=/opt/notebooks --allow-root --no-browser;"

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As previously mentioned, you can install jupyterthemes which is more widely used.
But, I also can prefer and recommend jupyter-themer which is easier to use and is not effecting the default shape of jupyter-notebook.

Installation: pip install jupyter-themer

The repository with documentation and examples (*for now, examples are stored in a not merged pull-request): @github: jupyter-thamer

My favourite customization: jupyter-themer -b dark -c zenburn.

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