Update Shopify Product Templates

I have four existing Shopify product page templates that already contain custom Liquid, HTML and CSS. I now need those files polished so the typography and text colour match my latest brand guidelines.

Here is what I’m after:
• Replace the current font stack with the new one I will supply.
• Adjust only the text colour throughout each template—headings, body copy, price, variants, error messages, etc.—so it is uniform across desktop and mobile.
• Keep all layout, images, and button styling exactly as they are; this task is strictly typeface and text-colour related.
• Clean, well-commented code so any future edits are easy.
• Once complete, push the changes to a development theme for my review before we publish live.

You will be working directly in the theme editor (or through Git if you prefer using Shopify CLI). Liquid, SCSS/CSS and an eye for detail are essential. I’ll provide the font files, hex colour, and collaborator access as soon as we start.