A helpful script to pick the best suited predefined themes for wal (https://github.com/dylanaraps/pywal) based on the colors in the image.
wal (pywal) is a great tool to generate a color palette from the dominant colors in an image and then apply it system-wide. However, sometimes it generates a palette that is too plane or bland, especially for monochromatic images. Such a color scheme is often less useful for syntax-highlighting compared to hand-picked built-in pywal themes. This is the main motivation for the wal-theme-picker.
Under the hood wal-theme-picker uses k-means clustering to extract the dominant colors in the image, then compares them with themes in wal, assigns each theme a rating based on a semi-empirical color-distance formula, and outputs the best-scoring themes.
Note, that the notion of "the best" theme is very subjective and relies heavily on the personal taste. Therefore, wal-theme-picker also proposes an interactive menu to try out the best-scoring themes with an option to revert the changes. There is also a possibility to print out the dominant colors and the palette for visual comparison.
You will probably need python packages numpy and PIL (or pillow).
The only other dependency is the installed wal.
usage: wal-theme-picker [-h] [-n N] [-c C] [-p] [-i] image_path
Tries to pick the best color palette for a given image from a set of hand-picked
syntax-highlighting palettes.
positional arguments:
image_path
optional arguments:
-h, --help show this help message and exit
-n N number of themes to print
-c C number of dominating colors in image
-p print image palette (first column) and n best themes in feh
-i call interactive menu to install one of the suggested themes using wal
For example, wal-theme-picker -n 5 -c 3 -p -i ~/wallpaper.png will output the names of the 5 best-scoring themes based on the 3 dominant colors in wallpaper.png, display the palettes in feh (or another default image viewer), and start an interactive menu to apply the themes using wal.