core: set up colored ls output in FreeBSD (#7787)

Fixes #7565 

lib/theme-and-appearance.zsh

@@ -19,7 +19,7 @@ if [[ "$DISABLE_LS_COLORS" != "true" ]]; then
     # coreutils, so prefer it to "gls".
     gls --color -d . &>/dev/null && alias ls='gls --color=tty'
     colorls -G -d . &>/dev/null && alias ls='colorls -G'
-  elif [[ "$OSTYPE" == darwin* ]]; then
+  elif [[ "$OSTYPE" == (darwin|freebsd)* ]]; then
     # this is a good alias, it works by default just using $LSCOLORS
     ls -G . &>/dev/null && alias ls='ls -G'