tt-colorize（tt 着色）

Apply TikTok's Brand Expression Palette to TT Style surfaces that feel too monochromatic or need a distinct campaign character beyond the standard Blaze + Glint palette.

Preparation

Tier check first: Read .tt-impeccable.md in project root or infer from codebase. If the surface is Strict TUX-native, stop — Brand Expression colors have no role in product UI screens; they are not part of the TUX token system.

Color values and pairing constraints: tt-impeccable/reference/tokens.md → Brand Expression Palette section.

Assess Color Opportunity

Before picking a color, understand what's missing:

1. Is the design too monochromatic? A TT Style page of pure black + Blaze + white has range, but some campaign surfaces need stronger atmosphere — a color that signals creative territory before a word is read.
2. What campaign vibe is needed? Energy/hype, softness/artistry, premium/immersive, organic/sustainable — each maps to a different expression color.
3. What already exists? Don't add expression color on top of an already dense layout. Expression color needs room to read as intentional.

If you cannot answer #2 from the codebase or brief, ask the user directly.

CRITICAL: Expression color is atmospheric, not decorative. One well-placed expression color anchors a section's vibe. Multiple expression colors in the same visual zone is not "more expressive" — it's incoherent.

Choose an Anchor Color

Pick ONE expression color per visual zone. All values and CSS variables are defined in reference/tokens.md → Brand Expression Palette.

Hard constraints (enforced by pairing rules in reference/tokens.md):

• DO NOT use Ember + Blaze on the same surface — both are dark red-family; they conflict rather than harmonize
• DO NOT use Shimmer + Glint on the same surface — same mint-teal family; the expression fill and the UI secondary token become indistinguishable
• ONE expression color per zone — never two expression fills side by side in the same section

Apply the Expression Color

Expression colors belong in three places only.

1. Section backgrounds and hero zones

The primary use. A full-width section with a Thrive or Glow background immediately establishes campaign territory. This is where expression color earns its presence.

• Apply as background-color using the --tt-expr-* variable
• Full-bleed is preferred — a small card with expression background looks accidental, not intentional
• Text on expression backgrounds: use the pairing table in reference/tokens.md

2. Large display text accents

At 72px+, an expression color on a single hero word or short phrase adds energy without overwhelming. Below 48px, expression colors on text read like a UI semantic signal (link, error, warning) — avoid.

3. Decorative and graphic elements

Geometric shapes, background patterns, illustrative fills that reinforce the atmospheric vibe without competing with content hierarchy.

NEVER apply expression colors to:

• Button fills or CTAs — Blaze (#FE2C55) owns this role
• Toggle tracks — Glint (#20D5EC) owns this role
• Status badges, notification dots, or any semantic state indicator
• Interactive icons in their resting state
• Image or video overlays — black-alpha overlays only; this rule is universal across all tiers
• Any element where the color could be read as "this is tappable"

Gradients

When a flat expression color feels too static or the design needs more atmospheric depth, use TUX Gradient Presets instead. Gradients work in the same placement slots as expression colors (section backgrounds, large display text) but carry more visual energy.

Color values, CSS strings, and mood descriptions: tt-colorize/reference/gradients.md

Pick by theme

• Dark theme / dark surface: use a gradient from the Dark Theme group — they have deep or near-black stops that anchor dark backgrounds
• Light theme / light surface: use a gradient from the Light Theme group — all stops are bright enough to read cleanly on white

Apply as background

background-image: linear-gradient(135deg, ...); /* copy CSS from reference/gradients.md */

Apply as text gradient fill

Large display text only (72px+). Below 48px the gradient stops compress and lose legibility.

background: linear-gradient(135deg, ...);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;

Ambient glow header (Ambient Glow Only category)

The 5 Light/ gradients exist solely for this pattern — a soft top-of-page light haze. Never use them as section backgrounds or text fills.

background-image: linear-gradient(180deg, ...);
mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
opacity: 0.5;

Gradient + expression color: don't mix

Do not place an expression color fill (Thrive, Shimmer, Dawn, Ember, Glow, Muse) and a gradient background in the same visual zone. Pick one or the other — both together create competing atmospheric signals.

Maintain TUX Semantic Integrity

Adding expression color must not corrupt TUX's color-as-interaction-signal system.

• Blaze and Glint keep their canonical semantic roles unchanged on the page
• A user who sees Glow on a section background should never wonder "is this a button?"
• Expression colors are mute — they set a mood, they do not communicate action

If an expression color lands on something that looks interactive, either move it to a non-interactive element or remove it.

Verify Quality

• Still TikTok? Does the page feel like a TikTok campaign property, or like a generic colorful page? Expression colors anchor identity only when the TUX token system — typography, spacing, Blaze CTA — is intact beneath them.
• One anchor per zone? Count expression color appearances. More than one in the same visual zone is too many.
• Semantics intact? Every Blaze element is still a CTA. Every Glint element is still a toggle or verified signal.
• Text legible? Verify against the pairing table in reference/tokens.md. Never invent text colors on expression backgrounds.
• Audit-safe? All expression color values must use --tt-expr-* CSS variables, traceable to reference/tokens.md. Raw hex values in component code will trigger audit warnings.