Always use color codes instead of named colors

This Code was to check if the color is supported by the Terminal
Emulator. This is not necessary, if we always use the numerical code.
This makes the code much clearer.

functions/colors.zsh

@@ -294,16 +294,7 @@ function termColors() {
 function getColor() {
   # If Color is not numerical, try to get the color code.
   if [[ "$1" != <-> ]]; then
-    # named color added to parameter expansion print -P to test if the name exists in terminal
-    local named="%K{$1}"
-    # https://misc.flogisoft.com/bash/tip_colors_and_formatting
-    local default="$'\033'\[49m"
-    # http://zsh.sourceforge.net/Doc/Release/Prompt-Expansion.html
-    local quoted=$(printf "%q" $(print -P "$named"))
-    if [[ $quoted == "$'\033'\[49m" && $1 != "black" ]]; then
-        # color not found, so try to get the code
-        1=$(getColorCode $1)
-    fi
+    1=$(getColorCode $1)
   fi
   echo -n "$1"
 }
@@ -321,32 +312,32 @@ function foregroundColor() {
 # Get numerical color codes. That way we translate ANSI codes
 # into ZSH-Style color codes.
 function getColorCode() {
-  # Check if given value is already numerical
+  # Early exit: Check if given value is already numerical
   if [[ "$1" = <-> ]]; then
-      echo -n "$1"
-    fi
+    echo -n "$1"
+    return
+  fi
+
+  local colorName="${1}"
+  # for testing purposes in terminal
+  if [[ "${colorName}" == "foreground"  ]]; then
+      # call via `getColorCode foreground`
+      for i in "${(k@)__P9K_COLORS}"; do
+          print -P "$(foregroundColor $i)$(getColor $i) - $i%f"
+      done
+  elif [[ "${colorName}" == "background"  ]]; then
+      # call via `getColorCode background`
+      for i in "${(k@)__P9K_COLORS}"; do
+          print -P "$(backgroundColor $i)$(getColor $i) - $i%k"
+      done
   else
-    # for testing purposes in terminal
-    if [[ "$1" == "foreground"  ]]; then
-        # call via `getColorCode foreground`
-        for i in "${(k@)__P9K_COLORS}"; do
-            print -P "$(foregroundColor $i)$(getColor $i) - $i%f"
-        done
-    elif [[ "$1" == "background"  ]]; then
-        # call via `getColorCode background`
-        for i in "${(k@)__P9K_COLORS}"; do
-            print -P "$(backgroundColor $i)$(getColor $i) - $i%k"
-        done
-    else
-        #[[ -n "$1" ]] bg="%K{$1}" || bg="%k"
-        # Strip eventual "bg-" prefixes
-        1=${1#bg-}
-        # Strip eventual "fg-" prefixes
-        1=${1#fg-}
-        # Strip eventual "br" prefixes ("bright" colors)
-        1=${1#br}
-        echo -n $__P9K_COLORS[$1]
-    fi
+      # Strip eventual "bg-" prefixes
+      colorName=${colorName#bg-}
+      # Strip eventual "fg-" prefixes
+      colorName=${colorName#fg-}
+      # Strip eventual "br" prefixes ("bright" colors)
+      colorName=${colorName#br}
+      echo -n $__P9K_COLORS[$colorName]
   fi
 }