The whole interface is driven by CSS variables. Use the toggle in the nav, click a card below, or set APP_THEME in .env to auto (follow the visitor's system), light, or dark.
Twenty curated palettes — vibrant, neon, pastel, neutral — that recolour the whole UI (buttons, links, glows, gradient mesh, even your emails). Click to preview, then set APP_ACCENT in .env to lock it in. The default ember stays if you leave it blank.
Type presets
Change the whole personality in one line.
Six display + body pairings, chosen to feel like different products — not different weights of the same one. Click a pairing to preview it on this page. Set FONT_PRESET in .env to apply it across your site; every heading, button and number follows. Code stays in JetBrains Mono.
Your combination
A look that feels like your product.
This uses the real heading, text and button styles. Copy these settings into your .env when you are happy with the combination.