Anyway to set termux theme to match system theme?

After much trial and effot I have successfully created a little thing that will do the thing (based on time, not nightmode) Adjust times to fit your liking. It polls time and automatically changes. (!!!!)

(PS. Thanks for giving me something to do and learn.)

Do the styling thing first:

Pick a light profile. Then
cp ~/.termux/colors.properties ~/.termux/light

Pick a dark one. Then
cp ~/.termux/colors.properties ~/.termux/dark

Add the following to end of ~/../usr/etc/bash.bashrc or make it its own script and call it from the bash.bashrc

alias trs='termux-reload-settings'
while :; do
currenttime=$(date +%H:%M)
if [[ "$currenttime" > "06:00" ]] && [[ "$currenttime" < "22:30" ]]; then
ln -sf ~/.termux/light ~/.termux/colors.properties
termux-reload-settings
# echo "the sun is out"
else
ln -sf ~/.termux/dark ~/.termux/colors.properties
termux-reload-settings
# echo "the spirits roam"
fi
done &

To force it type trs from anywhere

*edit: it was late and I was throwing ideas. I made a solution that actually works in another comment.

I'm thinking you could have separate color profiles with a script that to change the file using symbolic link?

(I don't know what I'm doing, I'm a figure it out as I go type, but maybe it'll work. Please help!)

You'd need something like shizuku (allows shell operation permission) or root to be able to read the system dark mode status.

Using shizuku you could call it by

rish -c 'cmd uimode night'

Which would show

Night mode: yes / no

If you did that you could us an if statement (I don't really know how to write that out confidently at the moment)

And use that fuction to change the symbolic link to the color.properties file instead of the at a specific time I used below.

So you keep 2 (or more) color profiles in separate files and call those locations to link to based on time of day / uimode.

You could put the script in the .boot (to automatically start) or .shortcut (to start with the widget) Or maybe add the command to run the script in the termux bash_bashrc or profile file to have it execute on each session launch.

#!/bin/sh

at 1200 #noon

ln -sf [/path/to/new_file] ~/.termux/color.properties

at 1900 #7pm

ln -sf [/path/to/new_file] ~/.termux/color.properties