diff --git a/docs/_sidebar.md b/docs/_sidebar.md
index 3f7d249..7035803 100644
--- a/docs/_sidebar.md
+++ b/docs/_sidebar.md
@@ -60,3 +60,4 @@
 - Tooling
   - [SolidTV Devtools](/tools/solid_devtools.md)
   - [JSX Locator Plugin](/tools/jsx_locator.md)
+  - [Hex Color Transform](/tools/hex_color_transform.md)
diff --git a/docs/tools/hex_color_transform.md b/docs/tools/hex_color_transform.md
new file mode 100644
index 0000000..57252a0
--- /dev/null
+++ b/docs/tools/hex_color_transform.md
@@ -0,0 +1,96 @@
+# Hex Color Transform
+
+A Vite plugin that transforms hex color strings (`"#RRGGBB"`, `"#RGB"`, `"#RRGGBBAA"`, `"#RGBA"`) into the `0xRRGGBBAA` numeric format required by the SolidTV renderer at build time.
+
+This means you can write natural hex color strings in your code and have them automatically converted to the correct format.
+
+## Installation
+
+The plugin is included in `@solidtv/solid` — no additional packages needed.
+
+## Usage
+
+Import and add the plugin to your `vite.config.ts`:
+
+```typescript
+import { defineConfig } from 'vite';
+import { hexColorTransform } from '@solidtv/solid/devtools';
+
+export default defineConfig({
+  plugins: [hexColorTransform()],
+});
+```
+
+### With Include/Exclude Filters
+
+You can control which files the plugin processes:
+
+```typescript
+import { defineConfig } from 'vite';
+import { hexColorTransform } from '@solidtv/solid/devtools';
+
+export default defineConfig({
+  plugins: [
+    hexColorTransform({
+      include: ['src/**/*.ts', 'src/**/*.tsx'],
+      exclude: 'src/ignore-this-directory/**',
+    }),
+  ],
+});
+```
+
+### Options
+
+| Option    | Type                 | Default       | Description                                       |
+| --------- | -------------------- | ------------- | ------------------------------------------------- |
+| `include` | `string \| string[]` | all files     | Glob pattern(s) specifying which files to process |
+| `exclude` | `string \| string[]` | no exclusions | Glob pattern(s) specifying which files to skip    |
+
+## How It Works
+
+The plugin runs during Vite's `transform` step and converts all hex color string literals to `0xRRGGBBAA` numeric literals.
+
+### Before
+
+```typescript
+const color = '#f6f6f6';
+const shortColor = '#fff';
+const alphaColor = '#f6f6f680';
+const shortAlpha = '#fff8';
+```
+
+### After
+
+```typescript
+const color = 0xf6f6f6ff;
+const shortColor = 0xffffffff;
+const alphaColor = 0xf6f6f680;
+const shortAlpha = 0xffffff88;
+```
+
+- 3-character hex (`#RGB`) is expanded to `#RRGGBBFF` (full opacity)
+- 4-character hex (`#RGBA`) is expanded to `#RRGGBBAA`
+- 6-character hex (`#RRGGBB`) gets `FF` appended for full opacity
+- 8-character hex (`#RRGGBBAA`) is used as-is
+
+## Migrating from `hexColor()`
+
+If you were previously using the `hexColor()` helper function, you can remove all calls with a find-and-replace:
+
+**VSCode regex find:**
+
+```
+hexColor\("(#[A-Fa-f0-9]{4,8})"\)
+```
+
+**Replace with:**
+
+```
+"$1"
+```
+
+> Be mindful of single vs double quotes — the regex matches double quotes.
+
+After removing `hexColor()` calls, the Vite plugin handles the conversion automatically at build time.
+
+**Tip:** Enable `editor.defaultColorDecorators` in VSCode settings (Command + , to search) to get built-in color highlighting for hex strings.
diff --git a/src/devtools/hexColorTransform.ts b/src/devtools/hexColorTransform.ts
new file mode 100644
index 0000000..196f4ca
--- /dev/null
+++ b/src/devtools/hexColorTransform.ts
@@ -0,0 +1,56 @@
+import { createFilter, type Plugin } from 'vite';
+
+export interface HexColorTransformOptions {
+  include?: string | string[];
+  exclude?: string | string[];
+}
+
+export default function hexColorTransform(
+  options: HexColorTransformOptions = {},
+): Plugin {
+  const filter = createFilter(options.include, options.exclude);
+
+  return {
+    name: 'vite-plugin-hex-color-transform',
+
+    transform(code, id) {
+      if (!filter(id)) {
+        return null;
+      }
+
+      const hexColorRegex =
+        /["']#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3}|[A-Fa-f0-9]{8}|[A-Fa-f0-9]{4})["']/g;
+
+      const convertHexTo0x = (_match: string, p1: string) => {
+        let hex = p1;
+
+        if (hex.length === 3) {
+          hex =
+            hex
+              .split('')
+              .map((char) => char + char)
+              .join('') + 'FF';
+        } else if (hex.length === 4) {
+          const alpha = hex[3]! + hex[3]!;
+          hex =
+            hex
+              .slice(0, 3)
+              .split('')
+              .map((char) => char + char)
+              .join('') + alpha;
+        } else if (hex.length === 6) {
+          hex += 'FF';
+        }
+
+        return `0x${hex.toUpperCase()}`;
+      };
+
+      const transformedCode = code.replace(hexColorRegex, convertHexTo0x);
+
+      return {
+        code: transformedCode,
+        map: null,
+      };
+    },
+  };
+}
diff --git a/src/devtools/index.ts b/src/devtools/index.ts
index a6d6d8c..7b44b4a 100644
--- a/src/devtools/index.ts
+++ b/src/devtools/index.ts
@@ -1,6 +1,9 @@
 import * as debug from '@solid-devtools/debugger/types';
 import * as lng from '../core/index.js';
 
+export { default as hexColorTransform } from './hexColorTransform.js';
+export type { HexColorTransformOptions } from './hexColorTransform.js';
+
 const EMPTY_CHILDREN: (lng.ElementNode | lng.ElementText)[] = [];
 
 /**