Nobody buys a color they can’t see.

Varn works on any Online Store 2.0 theme, including Dawn and Horizon, because it is a theme app extension that drives your theme’s existing variant control rather than replacing it. It has specific handling for the way Dawn and Horizon re-render their pickers, and it detects your theme’s own native swatches and steps aside rather than rendering a second row.

The storefront script is deferred and split by feature, so a page downloads only the parts your settings actually use, and our build holds every one of them to a size budget. Swatch data arrives inside the page your theme already renders, so Varn adds no network request for it and shifts nothing on the page.

Nothing is left behind. Varn never writes into a theme file and never injects a script tag, so removing the app removes the storefront code with it and your theme returns to its own dropdowns. Your setup stays saved on your Shopify products, so reinstalling brings it back, and Shopify cancels any paid plan the moment you uninstall.

In one place, and only when you ask for it. When you save per-color photos, the first photo you picked for each color is set as that color’s variant image in Shopify, which is what makes the gallery follow the swatch in your theme. Varn only uses photos the product already has, and never uploads, edits or deletes a photo. Everything else Varn stores is kept separately rather than rewritten into your products.

No. Clicking a swatch selects the value in your theme’s own option control and fires its native change event. Your theme’s form is still what submits to Shopify, so there is no parallel cart path that could disagree with the picker. Varn also refuses to select a value your theme has disabled.

No. The setup guide on the home page checks your theme for you, and the product pages show only the options that are actually colors and fill in the colors they recognize. If you do want to go further, the Advance plan adds a custom CSS field, but nothing on any plan requires it.

Varn recognizes Color, Colour, Couleur, Farbe, Colore, Kleur and Farve automatically. If yours is called Shade, Finish or anything else, add the name once on the Appearance page and it is treated the same way everywhere.

Two separate things, and we would rather be specific than mysterious about them. Auto-detect matches your option value names against a color dictionary spanning ten languages, applies only the matches it is confident about, and is free and unlimited on every plan. Set up with AI is for photos: it sends each product photo to a vision model, files it under the color it can see, and puts every color’s photos in the same order so switching color does not jump the shopper to a different angle. Shots that belong to no single color, such as a size chart, are kept visible for every color. That one is metered in AI usage credits, one credit per photo. Anything either is unsure about is left for you to set.

The storefront text is translated into 18 languages and follows whichever locale your shopper is browsing in. Assignments are translation-aware, so a color keeps its swatch across every translated version of the option. The admin interface itself is English.

Room, mostly. Starter is free forever and gives you unlimited color swatches on product pages, collections, search and quick view plus 250 AI usage credits a month, so plenty of stores never need to leave it. Paid plans raise three limits: how many products can have per-color photo galleries (5, 150, 1,500 or unlimited), how many AI usage credits you get each month (250, 1,500, 10,000 or 25,000) and how many product groups you can build (1, 5, 15 or 50). Grow and up also show swatches on products you have not set up yet, and Advance and Premium add swatch analytics and the advanced styling tools.

One credit is one product photo the AI looks at. Credits are only spent by Set up with AI, which sends a photo to the vision model to find out which color it shows. Auto-detect, which reads your option value names, is free and unlimited on every plan. Each plan includes a monthly allowance, from 250 on Starter to 25,000 on Premium, and the app shows the date yours resets. If you run out, Set up with AI stops until the reset, while auto-detect and assigning photos by hand carry on as normal.

Every paid plan is free for 7 days. Pick a plan, approve it on Shopify’s own confirmation screen, and the first 7 days cost nothing. Cancel inside those 7 days and you are never billed. Each store gets one trial, so switching plans during it keeps the days you have left rather than starting again, and trials run on the Starter allowance of 250 AI usage credits a month. Starter needs no trial at all, so you can equally start there and upgrade the day you outgrow it.