message: underline nav update
diff: @@ -21,7 +21,7 @@ function UnderlineNavBase({actions, className, align, children, full, label, ...
  const UnderlineNav = styled(UnderlineNavBase)`
  display: flex;
  justify-content: space-between;
  - border-bottom: 1px solid ${get('colors.gray.2')};
  + border-bottom: 1px solid #EAECEF;
  &.UnderlineNav--right {
  justify-content: flex-end;
  @@ -67,7 +67,7 @@ UnderlineNav.Link = styled.a.attrs(props => ({
  &:focus {
  color: ${get('colors.gray.9')};
  text-decoration: none;
  - border-bottom-color: ${get('colors.gray.3')};
  + border-bottom-color: ${get('colors.orange.5')};
  transition: 0.2s ease;
  .UnderlineNav-octicon {
  