Theming

Every component reads its colors, radius, and spacing from CSS variables. php artisan ui:init injects this block for you. If you copy components by hand (Channel B), paste this once into your Tailwind v4 stylesheet and you are done, no component edits.
Theme variables

/*
 * LaralCN-UI theme tokens. Tailwind v4, CSS-first, OKLCH (shadcn parity).
 * These variables are consumed by components (bg-primary, text-muted-foreground,
 * rounded-md, ...). Edit the values to theme your project, do NOT edit component
 * files. Channel B users: copy this whole block into your app stylesheet once.
 */

:root {
    --radius: 0.625rem;
    --background: oklch(1 0 0);
    --foreground: oklch(0.145 0 0);
    --card: oklch(1 0 0);
    --card-foreground: oklch(0.145 0 0);
    --popover: oklch(1 0 0);
    --popover-foreground: oklch(0.145 0 0);
    --primary: oklch(0.205 0 0);
    --primary-foreground: oklch(0.985 0 0);
    --secondary: oklch(0.97 0 0);
    --secondary-foreground: oklch(0.205 0 0);
    --muted: oklch(0.97 0 0);
    --muted-foreground: oklch(0.556 0 0);
    --accent: oklch(0.97 0 0);
    --accent-foreground: oklch(0.205 0 0);
    --destructive: oklch(0.577 0.245 27.325);
    --destructive-foreground: oklch(0.985 0 0);
    --border: oklch(0.922 0 0);
    --input: oklch(0.922 0 0);
    --ring: oklch(0.708 0 0);
    --chart-1: oklch(0.646 0.222 41.116);
    --chart-2: oklch(0.6 0.118 184.704);
    --chart-3: oklch(0.398 0.07 227.392);
    --chart-4: oklch(0.828 0.189 84.429);
    --chart-5: oklch(0.769 0.188 70.08);
    --sidebar: oklch(0.985 0 0);
    --sidebar-foreground: oklch(0.145 0 0);
    --sidebar-primary: oklch(0.205 0 0);
    --sidebar-primary-foreground: oklch(0.985 0 0);
    --sidebar-accent: oklch(0.97 0 0);
    --sidebar-accent-foreground: oklch(0.205 0 0);
    --sidebar-border: oklch(0.922 0 0);
    --sidebar-ring: oklch(0.708 0 0);
}

.dark {
    --background: oklch(0.145 0 0);
    --foreground: oklch(0.985 0 0);
    --card: oklch(0.205 0 0);
    --card-foreground: oklch(0.985 0 0);
    --popover: oklch(0.205 0 0);
    --popover-foreground: oklch(0.985 0 0);
    --primary: oklch(0.922 0 0);
    --primary-foreground: oklch(0.205 0 0);
    --secondary: oklch(0.269 0 0);
    --secondary-foreground: oklch(0.985 0 0);
    --muted: oklch(0.269 0 0);
    --muted-foreground: oklch(0.708 0 0);
    --accent: oklch(0.269 0 0);
    --accent-foreground: oklch(0.985 0 0);
    --destructive: oklch(0.704 0.191 22.216);
    --destructive-foreground: oklch(0.985 0 0);
    --border: oklch(1 0 0 / 10%);
    --input: oklch(1 0 0 / 15%);
    --ring: oklch(0.556 0 0);
    --chart-1: oklch(0.488 0.243 264.376);
    --chart-2: oklch(0.696 0.17 162.48);
    --chart-3: oklch(0.769 0.188 70.08);
    --chart-4: oklch(0.627 0.265 303.9);
    --chart-5: oklch(0.645 0.246 16.439);
    --sidebar: oklch(0.205 0 0);
    --sidebar-foreground: oklch(0.985 0 0);
    --sidebar-primary: oklch(0.488 0.243 264.376);
    --sidebar-primary-foreground: oklch(0.985 0 0);
    --sidebar-accent: oklch(0.269 0 0);
    --sidebar-accent-foreground: oklch(0.985 0 0);
    --sidebar-border: oklch(1 0 0 / 10%);
    --sidebar-ring: oklch(0.556 0 0);
}

@theme inline {
    --radius-sm: calc(var(--radius) - 4px);
    --radius-md: calc(var(--radius) - 2px);
    --radius-lg: var(--radius);
    --radius-xl: calc(var(--radius) + 4px);
    --color-background: var(--background);
    --color-foreground: var(--foreground);
    --color-card: var(--card);
    --color-card-foreground: var(--card-foreground);
    --color-popover: var(--popover);
    --color-popover-foreground: var(--popover-foreground);
    --color-primary: var(--primary);
    --color-primary-foreground: var(--primary-foreground);
    --color-secondary: var(--secondary);
    --color-secondary-foreground: var(--secondary-foreground);
    --color-muted: var(--muted);
    --color-muted-foreground: var(--muted-foreground);
    --color-accent: var(--accent);
    --color-accent-foreground: var(--accent-foreground);
    --color-destructive: var(--destructive);
    --color-destructive-foreground: var(--destructive-foreground);
    --color-border: var(--border);
    --color-input: var(--input);
    --color-ring: var(--ring);
    --color-chart-1: var(--chart-1);
    --color-chart-2: var(--chart-2);
    --color-chart-3: var(--chart-3);
    --color-chart-4: var(--chart-4);
    --color-chart-5: var(--chart-5);
    --color-sidebar: var(--sidebar);
    --color-sidebar-foreground: var(--sidebar-foreground);
    --color-sidebar-primary: var(--sidebar-primary);
    --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
    --color-sidebar-accent: var(--sidebar-accent);
    --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
    --color-sidebar-border: var(--sidebar-border);
    --color-sidebar-ring: var(--sidebar-ring);
}