removed extension colouring, and changed some colours

sfm

@@ -22,36 +22,15 @@ file_colour() {
     _fc_ext="${_fc_name##*.}"
     _fc_ext=$(printf '%s' "$_fc_ext" | tr '[:upper:]' '[:lower:]')
     # executable?
-    [ -x "${CWD}/${_fc_name}" ] && { printf '%s' "${RED}${BOLD}"; return; }
-    case "$_fc_ext" in
-        # images
-        jpg|jpeg|png|gif|bmp|tiff|tif|webp|svg|ico|heic|heif|avif)
-            printf '%s' "${MAGENTA}" ;;
-        # video
-        mp4|mkv|avi|mov|wmv|flv|webm|m4v|mpeg|mpg|3gp|ogv)
-            printf '%s' "${MAGENTA}${BOLD}" ;;
-        # audio
-        mp3|flac|ogg|wav|aac|m4a|opus|wma|aiff)
-            printf '%s' "${CYAN}${BOLD}" ;;
-        # archives
-        zip|tar|gz|bz2|xz|zst|7z|rar|tgz|tbz2)
-            printf '%s' "${RED}" ;;
-        # documents / text
-        pdf|doc|docx|odt|xls|xlsx|ods|ppt|pptx|odp)
-            printf '%s' "${YELLOW}" ;;
-        # code / scripts
-        sh|bash|zsh|fish|py|rb|pl|lua|js|ts|jsx|tsx|\
-        c|h|cpp|cc|cxx|hpp|rs|go|java|kt|swift|cs|php|r)
-            printf '%s' "${GREEN}" ;;
-        # data / config
-        json|xml|yaml|yml|toml|ini|conf|cfg|env)
-            printf '%s' "${CYAN}" ;;
-        # markdown / text
-        md|markdown|rst|txt|log)
-            printf '%s' "${WHITE}" ;;
-        # default
-        *) printf '%s' "${WHITE}" ;;
-    esac
+    [ -x "${CWD}/${_fc_name}" ] && { printf '%s' "${GREEN}${BOLD}"  ; return; }
+    # node device?
+    [ -c "${CWD}/${_fc_name}" ] && { printf '%s' "${MAGENTA}${BOLD}"; return; }
+    # block device?
+    [ -b "${CWD}/${_fc_name}" ] && { printf '%s' "${MAGENTA}${BOLD}"; return; }
+    # readable?
+    [ -r "${CWD}/${_fc_name}" ] || { printf '%s' "${RED}${BOLD}"    ; return; }
+    # writable?
+    [ -w "${CWD}/${_fc_name}" ] || { printf '%s' "${RED}${BOLD}"    ; return; }
 }
 
 goto()        { printf '\033[%d;%dH' "$1" "$2"; }
@@ -362,12 +341,12 @@ render_row() {
     entry=$(get_entry "$_idx")
 
     case "$entry" in
-        */) colour="${GREEN}${BOLD}" ;;
+        */) colour="${BLUE}${BOLD}" ;;
         *@)
             _name="${entry%@}"
             # broken symlink if target doesn't exist
             if [ -e "${CWD}/${_name}" ]; then
-                colour="${MAGENTA}${BOLD}"
+                colour="${CYAN}${BOLD}"
             else
                 colour="${RED}${BOLD}"
             fi ;;
@@ -471,7 +450,7 @@ draw_preview() {
                 _dl=" ${_dn}/"
                 [ "${#_dl}" -gt "$((_pw - 1))" ] && _dl="$(printf '%s' "$_dl" | cut -c1-$((_pw-2)))~"
                 goto "$_pr" "$_px"
-                printf '%s%s%s' "${GREEN}${BOLD}" "$_dl" "${RESET}"
+                printf '%s%s%s' "${BLUE}${BOLD}" "$_dl" "${RESET}"
                 _pr=$((_pr + 1))
             done
             for _fe in "$_path"/*; do