Loud is a storefront theme for streetwear and sneaker shops, youth fashion labels, band and creator merch, skate shops and every store that sells in limited drops; on Multi-Vendor it suits creator merch marketplaces.
Four styles change the whole poster: Acid (bone and lime), Riot (black and red), Pool (sky blue and orange) and Newsprint (grey paper, black and one red).
Four styles, one theme
Each style changes the ground, bands, type weight and card treatment, not only the accent colour. Open any of them in the live demo.
Is my size left: sizes on every row, sold-out sizes struck
How much: big prices, real sale timers only
Add from the list without opening the product
A floating bag bar and add bar on phones
Text contrast of at least 4.5:1 in every style
How it works
Install the package in Add-ons: it adds the Loud theme without touching your storefront. Activate Loud in Website, Themes and pick a style. The next admin page adds the demo store, so every section is filled at once; replace it step by step.
Drops come from the Available since date and stock, sizes from variations or a Size option, timers from promotion end dates.
Features
Text-bar header with a full-screen overlay menu
Type wall with a product cut-out and a round price sticker with countdown
Two tilted tickers with a pause button
Numbered product rows with sizes, colours, price and add
Image peek on row hover and a Rows and Posters switch
Campaign, collab and sale posters
Drop calendar: live, notify me, sold out, add to calendar
Giant department words and numbered blog notes
Category page with a giant word, sale sticker and sticky filters
Product page with image strip, size squares, drop box and add bar
Receipt-style cart drawer and floating bag bar on phones
Giant shop name on vendor pages
Installs with full demo content ready after activation
Four styles: Acid, Riot, Pool and Newsprint
Child of Responsive: add-on hooks keep working
CS-Cart and Multi-Vendor 4.17.2 to 4.21.x
What you get
Package
kv_theme_loud-1.0.0.zip: the theme and its wrapper add-on, installed through Add-ons → Manage add-ons. Activate it in Website → Themes and pick a style.
Editions
CS-Cart, CS-Cart Ultimate, Multi-Vendor and Multi-Vendor Ultimate 4.17.2 – 4.21.x, one package. A child theme of Responsive: no core files are changed and add-on templates keep working.
Updates & support
12 months included. Updates keep the theme files you changed; your layouts are never replaced.
License
1 production installation; subdomains, staging, dev and localhost are free. The theme checks its license for your domain once a day from the admin panel. Without a valid license the storefront shows the standard Responsive look instead of the Loud design; cart, checkout and orders keep working. How licensing works
Compatibility
We list only the builds we install and test on. “Tested” means the full test plan was run on that build; “Supported” means the build is inside the supported range and uses the same hooks.
CS-Cart version and edition compatibility
CS-Cart version
CS-Cart
CS-Cart Ultimate
Multi-Vendor
Multi-Vendor Ultimate
4.22 and later
Testing next
Testing next
Testing next
Testing next
4.21.2
Supported
Supported
Tested
Supported
4.20.x
Supported
Supported
Supported
Supported
4.19.x
Supported
Supported
Supported
Supported
4.18.x
Supported
Supported
Supported
Supported
4.17.2
Tested
Supported
Tested
Supported
Before 4.17.2
Not supported
Not supported
Not supported
Not supported
Last tested build: Multi-Vendor 4.21.2, Oct 19, 2026Tested on: CS-Cart 4.17.2, Multi-Vendor 4.17.2, Multi-Vendor 4.21.2
Requirements
Platform
CS-Cart or Multi-Vendor (also Ultimate) 4.17.2 – 4.21.x
Requirement
Administrator access to the admin panel
Core changes
None. Hooks and template overrides only
1.0.0
Oct 19, 2026
Latest
Added 5
Loud theme for CS-Cart, CS-Cart Ultimate, Multi-Vendor and Multi-Vendor Ultimate 4.17.2 - 4.21.x: a poster-style
Category pages with a giant category word, a sale sticker from the promotion that covers the category, subcategory
Four styles: Acid, Riot, Pool and Newsprint. Anton, Familjen Grotesk and Space Mono (SIL Open Font License,
Complete demo content (Frayd Supply: five departments with 18 subcategories, 49 products with sizes and colours,
Domain-bound licence with the Kavio theme kit gate (without a valid licence the storefront shows the standard
Tested on CS-Cart 4.17.2, Multi-Vendor 4.17.2, Multi-Vendor 4.21.2. First release.
Does Loud work with my add-ons?
Yes. Loud is a child of the standard Responsive theme and does not override product, cart or checkout templates, so add-on hooks keep working. Kavio Labs add-ons are styled to match each style.
Which stores is Loud for?
Streetwear, sneakers, youth fashion, merch, skate and surf shops, limited art prints, records and books, and any store that sells in drops. Newsprint is the calm style for bookshops, galleries and studios.
Why does a row show no sizes?
Rows show sizes from product variations with a "Size" feature or from a product option named "Size". Products without sizes show an "+ Add" button.
How do I show a sold-out size?
With variations: stock 0 on that variation. With options: set the size variant to Disabled.
Why is there no timer on the price sticker?
The sticker counts down to the end of an active catalog promotion of the product. Promotions without an end date show the price only.
Why is a drop not in the calendar?
The calendar lists the products of its block. Give upcoming drops an Available since date in the future.
Can I turn off the image peek or the outlined words?
Yes, in the Loud settings.
What happens without a licence?
A new installation works for 14 days. After that, without a valid licence, the storefront shows the standard Responsive look; cart, checkout and orders keep working and visitors see no message. The admin panel tells you why and how to fix it. See Configuration.
Does the theme work on my staging copy?
Yes. Subdomains of your licensed domain and local development hosts are covered by the same licence.
Will an update overwrite my changes?
No. Files you changed are kept (a notice lists them), and layouts and blocks are never replaced.
A Swiss-editorial storefront theme with a shop-window homepage, oversized type and four bold styles, built on Responsive so every add-on keeps working.
A department-store theme for large catalogues: colour-coded departments, a department list beside the hero, tabbed product blocks and a sticky buy box.