In the realm of AI-driven development, one persistent shortcoming is often observed in aesthetics and design. AI models, when lacking clear directives, tend to fall back on default preferences, resulting in homogenized interfaces that feel disjointed in vision and interaction. The solution? Design First, Deliver Later. This article walks through a practical case study using the TRAE intelligent agent framework to create a vocabulary learning app for junior high school students, demonstrating how to leverage DESIGN.md and design skills to transform AI-generated designs.
The Problem: AI's Design Limitations
AI-generated UIs often suffer from:
- Homogeneity: Over-reliance on default styles (e.g., Tailwind CSS's default purple-blue gradient).
- Lack of Cohesion: Inconsistent visual language and broken interaction flows.
- Cheap Aesthetics: Generic components and uninspired color palettes.
This happens because AI, without explicit guidance, defaults to safe, overused design patterns.
Solution: Design First with DESIGN.md and Skills
To break free from this "AI look," adopt a two-step approach:
- Frontend-Design Skill: Constrains AI to avoid cookie-cutter layouts and pushes for bold, distinctive designs.
- DESIGN.md: A design specification document that defines global styles, component rules, color schemes, typography, spacing, and interaction guidelines.
Step 1: Choose the Framework and Define the Project
Use the TRAE framework (beginner-friendly) and set out to build a lightweight vocabulary review app for junior high school students.
Common Mistakes in Round 1 (Without Design Guardrails)
- No defined design system.
- No design skill employed.
- Vague style prompts (e.g., "make it cute and minimal").
The result? A functional but disjointed app with basic but inconsistent layout, confusing interactions, and generic color schemes.
Step 2: Implement Design Safeguards in Round 2
Install the Frontend-Design Skill
First, install the frontend-design skill. In most agent frameworks, this is as simple as:
# Example command to install in TRAE
trae install skill frontend-design
This skill forces AI to move beyond template layouts and create unique designs.
Create or Download DESIGN.md
DESIGN.md acts as a design playbook for AI. You can generate it by chatting with AI (if you have design knowledge) or download pre-made templates from sites like styles.refero.design, which offers thousands of design systems from top websites.
For our vocabulary app, download a template and customize it, defining:
- Color Palette: A cohesive scheme (e.g., earthy greens and neutrals for a calming study app).
- Typography: Readable fonts and hierarchy.
- Component Rules: Consistent buttons, cards, and navigation.
- Interaction Guidelines: Clear feedback, intuitive navigation, and prohibited design choices.
Integrate DESIGN.md into Your Project
Most frameworks require referencing DESIGN.md in your prompts or configuration. In TRAE, simply add this to your prompt:
# UI DESIGN
Strictly follow DESIGN.md
Round 2: The Transformed Outcome
With the frontend-design skill and DESIGN.md in place, the AI-generated app now features:
- Unified Visual Language: Consistent colors, fonts, and components across all pages.
- Polished Interactions: Intuitive navigation, subtle hover effects, and unobtrusive feedback.
- Professional Aesthetics: A cohesive look that feels intentional, not generic.
Example DESIGN.md structure:
# DESIGN.md - VocabApp
## Color Palette
- Primary: #4CAF50 (Green)
- Secondary: #81C784 (Light Green)
- Neutral: #F5F5F5 (Off-white)
- Text: #333333 (Dark Gray)
## Typography
- Heading: 'Inter', sans-serif, 24px, bold
- Body: 'Inter', sans-serif, 16px, regular
- Small Text: 'Inter', sans-serif, 14px, regular
## Components
- Button: Rounded corners (8px), solid fill, hover effect (scale 1.02)
- Card: Rounded corners (12px), shadow on hover, padding 16px
Conclusion
By investing just 1 minute to install a design skill and 10 minutes to curate a DESIGN.md, you can transform AI-generated interfaces from generic to polished. This approach ensures your product has a distinct visual identity, free from the "AI look."