Use variables for colored error

scripts/test-variables

@@ -10,6 +10,7 @@ OFF=$'\e[0;0m'
 
 RES_OK=${GRN}OK${OFF}
 RES_FAIL=${RED}FAIL${OFF}
+RES_ERROR=${RED}ERR${OFF}
 RES_ULT=${BLD}RESULT${OFF}
 #RES_FAIL_BLINK="${RED_BLINK}FAIL${OFF}"
 RES_FAIL_BIG="${RED_BOLD}######## FAIL ########${OFF}"

scripts/wrapper-badblocks

@@ -74,7 +74,7 @@ else
 		done
 		smartctl -A -f brief /dev/$DISK \
 		| parse-smart-attr \
-		| sed 's/ERROR/${RED}ERROR${OFF}/g' \
+		| sed 's/ERROR/$RES_ERROR/g' \
 			> $OUTPUT_DIR/disk/$SERIAL.smart.error
 	fi
 fi