How to change the color of my SALE button to red in Flex theme

Topic summary

Changing a Shopify Flex theme menu item color with custom CSS was the main issue. The original request was to make the sitewide main-menu SALE link red.

  • The proposed fix was to add CSS at the bottom of Online Store > Theme > Edit code > Assets > styles.css.
  • For the desktop menu, a selector targeting the 10th navigation item was provided, setting the link color to red with !important.

A related follow-up asked for the mobile equivalent on another store. Because the exact mobile item was unclear, a site URL and then a screenshot were requested to identify which mobile menu link should keep a specific orange style.

  • A second CSS snippet was then provided for mobile, targeting the first item in the mobile menu and setting its color to #F68D2E.
  • The requester confirmed that the mobile solution worked perfectly.

Outcome: both desktop and mobile color-change requests were resolved with CSS-only solutions. Images were important in the mobile case to clarify the exact menu item and desired styling.

Summarized with AI on March 7. AI used: gpt-5.4.

This was really helpful for me as well! Would you be able to provide the same code for mobile? Thank you!