bash – Skip printing on line matching regex pattern

How can I skip printing on the line that matches pattern. For remaining lines do the pront with the corresponding printf until a new line wathes another pattern.

printf '%s\n' "$@"  \
  | while IFS="" read -r vl; do
      if [[ "$vl" =~ ^[[:space:]]*Wht:[[:space:]]*$ ]]; then
        printf '%s%s%s\n' "${wht}" "$vl" "${rst}"
      elif [[ "$vl" =~ ^[[:space:]]*Grn:[[:space:]]*$ ]]; then
        printf '%s%s%s\n' "${grn}" "$vl" "${rst}"
      elif [[ "$vl" =~ ^[[:space:]]*Blu:[[:space:]]*$ ]]; then
        printf '%s%s%s\n' "${blu}" "$vl" "${rst}"
      else
        printf '%s%s%s\n' "${wht}" "$vl" "${rst}"
      fi
    done