message: Make the unticked box light gray instead of dark gray
diff: /* We want the ink to be the color we're going to, not coming from */
  --paper-checkbox-checked-color: var(--primary-green);
  --paper-checkbox-checked-ink-color: var(--dark-gray);
  - --paper-checkbox-unchecked-color: var(--dark-gray);
  + --paper-checkbox-unchecked-color: var(--light-gray);
  --paper-checkbox-unchecked-ink-color: var(--primary-green);
  }
  paper-input {
  