Colorize: Give Your Agent a Restraint-First Color Strategy

Where this fits

You're building a dashboard for a fintech startup. Your agent generates the layout, components, and logic — but the UI comes out looking like a default Bootstrap theme: everything is blue, nothing feels intentional. Or worse, the agent gets excited and sprinkles five different accent colors across every button and badge, turning the product into a carnival. You need a single, decisive color pass that respects the brand and the user's attention. The colorize skill is exactly that: a strategy lens that tells the agent when to add one accent at 3-5 deliberate spots, or when to strip a UI back to 90% neutral.

Why agents benefit

• Enforces a hard rule — 90%+ neutral, one accent, 3-5 placements per viewport. The agent stops guessing and starts applying a measurable constraint.
• Asks about brand first — instead of defaulting to blue, the agent prompts for an existing brand color or offers 2-3 OKLCH options (one warm, one cool) so the choice feels human-led.
• Prevents over-coloring — the skill's anti-slop guidance catches the common failure mode where agents add color to every element to "make it pop."
• Works as a post-pass — you can run it after any UI generation, not just from scratch. It's a corrective lens that refines an existing layout.
• Integrates with a broader toolkit — if ui-craft is installed, colorize reads its SKILL.md first for discovery and craft tests, so the color decision aligns with the overall design system.

Practical scenarios

The default-blue dashboard

Your agent built a CRM interface. Every primary button, link, and icon is the same shade of blue. The user says "colorize this." The skill kicks in: it asks for the brand color (say, a deep teal), then applies it to the primary CTA, the active nav state, and one key data highlight. Everything else stays neutral. The result: a focused, professional look without a redesign.

The rainbow effect

A landing page agent went wild — orange buttons, purple headings, green badges, pink hover states. The user asks to "tone it down." colorize evaluates the current palette, picks the strongest brand-aligned accent, and reduces the rest to grays and off-whites. It also flags the placements that were competing and suggests which ones to keep.

Starting from a blank canvas

A new project has no design tokens. The user says "add some color to my UI." The skill offers two OKLCH options — a warm terracotta and a cool indigo — and lets the user pick. Then it applies the accent to the header, the primary button, and a single callout. No more decision paralysis.

Add it to your agent workflow

Install it with:

npx skills add educlopez/ui-craft --skill colorize

Then invoke it naturally in your prompt:

Colorize my checkout page — we have a brand color: oklch(0.62 0.18 260). Keep it subtle.

The skill will read the ui-craft context, confirm the accent, and apply it at 3-5 placements while keeping the rest neutral. You can also run it as a standalone pass on any existing UI.

Compare before adopting

Before you add colorize to your stack, compare it against alternatives on four axes:

• Quality signals — Does the skill enforce a concrete, testable rule (like the 90/10 split) or is it vague advice? colorize has a clear threshold and placement count.
• Maintenance freshness — Check the repo's recent commits and issues. A skill that's actively updated keeps pace with agent framework changes.
• Alternatives — There are other color-palette generators and design-system prompts. Look for one that emphasizes restraint over generation — most tools add color, few remove it.
• Workflow fit — Does it integrate with your existing agent's skill loader and prompt structure? The npx install and SKILL.md convention make it drop-in for most setups.

Why it is worth tracking

colorize stands out because it solves a real pain point: AI-generated UIs tend to be either bland or chaotic. With 313 stars and an active author, it's a signal that developers value a disciplined approach to color. The skill's emphasis on asking about brand and using OKLCH (a perceptually uniform color space) shows a thoughtful design foundation. Keep an eye on its evolution — if the author adds more lenses or integrates deeper with ui-craft, it becomes even more valuable. For a broader view of similar agent skills, you can browse the OpenAgentSkill directory and see how it compares to other design-focused tools. If you're tired of arguing with your agent about accent colors, this skill is worth a try.