ThemeMyAI: Custom Themes & Colors for ChatGPT, Claude and Gemini

Make ChatGPT, Claude and Gemini feel like yours with 20 calm themes, custom colors, typography and layouts—all stored locally.

MAKE YOUR AI WORKSPACE FEEL LIKE YOURS ThemeMyAI is a visual customization browser extension for ChatGPT, Claude, and Gemini. It gives you a calm, flexible theme studio for personalizing the AI tools you use every day. Choose a complete theme in one click or fine-tune individual colors, typography, spacing, conversation width, interface density, and focus settings. Changes appear instantly, making it easy to explore different looks without repeatedly saving or refreshing the page. ThemeMyAI changes presentation only. Your conversations remain private, and your preferences are stored locally in your browser. START WITH A MOOD Choose from 20 carefully designed themes organized into easy-to-browse collections. Themes range from warm, paper-inspired reading environments to focused dark interfaces, cool minimal palettes, soft editorial styles, and clean monochrome workspaces. Available moods include calm designs such as Quiet Paper, Glacier, Deep Focus, Forest Desk, Plum Dusk, and Studio Mono. Use the navigation arrows to discover additional collections and preview each mood directly inside your current AI workspace. Every mood is a complete visual system—not simply a different accent color. Page surfaces, panels, sidebars, text, interactive elements, and supporting interface colors are balanced to work together. CUSTOMIZE YOUR COLORS Create an AI chat interface that matches your taste, environment, or preferred way of working. ThemeMyAI provides dedicated controls for: • Accent color • Body and response text • Main conversation background • Panels, cards, menus, and composer surfaces • Sidebar and navigation areas The accent color is applied to meaningful interface elements such as links, selected states, user messages, actions, and controls. Text and background colors remain independently adjustable, giving you more control than a simple color filter or browser-wide theme. A live contrast indicator helps you understand whether your selected text and background colors remain comfortable to read. CHOOSE HOW READING FEELS Typography has a major effect on long conversations. ThemeMyAI lets you change the reading character of your AI workspace without affecting the content itself. Choose from different typography styles, including clean system fonts, rounded interfaces, editorial serif combinations, and focused monospace options. You can also adjust: • Text size • Conversation width • Interface density • Reading spacing Use a narrower conversation width for focused reading, a wider layout for detailed answers, or a more generous text size for improved comfort. ThemeMyAI also styles nested response content consistently, including headings, paragraphs, strong text, emphasis, links, lists, quotations, tables, annotations, and other generated text elements. CREATE A CALMER WORKSPACE Focus mode reduces visual competition from the sidebar so you can concentrate on the active conversation. Navigation remains available when you need it, but it no longer dominates the workspace. Reduced motion removes unnecessary interface transitions for users who prefer a quieter and more stable experience. Together with adjustable typography, density, and reading width, these controls turn the extension into more than a color picker. It becomes a complete AI workspace customizer designed for everyday reading, writing, research, and focused conversations. PREVIEW EVERYTHING LIVE Theme changes appear directly on the active page as you make them. You can: • Preview moods instantly • Compare color combinations • Adjust typography in real time • See layout changes before closing the studio • Undo recent changes • Reset everything to the ThemeMyAI defaults Settings save automatically, so there is no complicated configuration process. ONE VISUAL PROFILE ACROSS SUPPORTED WORKSPACES ThemeMyAI provides one familiar customization experience across all supported AI chat interfaces. Your selected visual preferences follow you between supported workspaces, helping each interface feel consistent while still respecting the underlying layout and functionality of each service. Dedicated compatibility rules are maintained for every supported site. This allows ThemeMyAI to handle differences in sidebars, conversations, generated content, buttons, panels, editors, and navigation structures without applying one fragile style rule everywhere. PRIVATE BY DESIGN ThemeMyAI is built as a local-only visual customization tool. The extension: • Does not read your conversations • Does not copy or export conversation content • Does not transmit your messages • Does not require an account • Does not use advertising • Does not include analytics • Does not use remote scripts • Does not operate an external extension backend • Does not sell or share browsing data Only your visual preferences—such as theme, colors, typography, spacing, and focus settings—are stored through your browser’s local extension storage. Removing the extension removes its ability to style supported pages immediately. EASY TO USE 1. Install ThemeMyAI. 2. Open any supported AI chat workspace. 3. Click the colorful ThemeMyAI button near the bottom-right of the page. 4. Choose a mood or customize individual settings. 5. Close the studio and continue your conversation. You can also open the theme studio from the extension toolbar while viewing a supported page. The global on/off control restores the original interface immediately whenever you want to pause customization. FEATURES AT A GLANCE • 20 complete light and dark theme moods • Live theme preview • Custom accent color • Custom body text color • Custom page background • Custom panel and composer surfaces • Custom sidebar color • Multiple typography styles • Adjustable text size • Adjustable conversation width • Adjustable interface density • Focus mode • Reduced motion • Live contrast feedback • Undo support • One-click reset • Automatic local saving • Consistent styling for nested generated content • Dedicated compatibility rules for supported AI interfaces • No account required • No conversation access • No analytics or advertising BUILT FOR THE INTERFACE YOU ACTUALLY USE AI conversations can be short questions, long reading sessions, detailed writing projects, or ongoing workspaces. A single default appearance cannot suit every person, screen, environment, or time of day. ThemeMyAI gives you control over that environment while leaving the underlying service untouched. Create a warm reading space, a deep-focus dark theme, a clean minimal workspace, a colorful personal setup, or something entirely your own. Your AI. Your atmosphere. INDEPENDENT EXTENSION ThemeMyAI is an independent browser extension and is not affiliated with, endorsed by, or officially connected to the providers of the supported AI services. Supported interfaces may change over time. ThemeMyAI is maintained with dedicated compatibility rules to adapt to those interface updates.