Not generating theme when used with symlinks

[Chaitanyabsprip]

ln -sf (find /home/chaitanya/Pictures/ -type f \( -name "*.png" -or -name "*.jpg" -or -name "*.jpeg" \)| shuf -n1) $HOME/.wallpaper wal -i (readlink $HOME/.wallpaper)

Tried making it work like this but even thought the wallpaper was changing the terminal colors were not updating and it was not generating a theme/color pallete.
then I tried it with readlink $HOME/.wallpaper and it worked