Bike Shed Color Swatch Selector
Complete color swatch selection in a bike shed scenario: includes real content, interactive controls, clear status feedback, and responsive layouts across sizes.
With JavaScript enabled, you can edit, run, and save this example. The fixed source is as follows:
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<title>Bike Shed Color Swatch Selector</title>
<style>
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button,[role="button"],input,select,textarea { accent-color:var(--accent); }
button { cursor:pointer; }
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible { outline:3px solid var(--accent); outline-offset:3px; }
[hidden] { display:none !important; }
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.panel{padding:16px;border:3px double var(--accent);background:var(--paper)}.stack{display:grid;gap:14px}.row{display:grid;grid-auto-flow:column;grid-auto-columns:max-content;gap:10px;overflow:auto}.action{padding:10px 15px;border:1px solid var(--accent);background:transparent;font-family:Didot,serif;letter-spacing:.06em}.action.primary,.action.is-active{color:var(--paper);background:var(--ink)}.metric{font-family:Didot,serif;font-size:clamp(36px,8vw,74px);letter-spacing:.04em}.status{min-height:24px;padding:9px;border-inline:1px solid var(--accent);text-align:center}.muted{line-height:1.8}.chip{padding:5px 14px;border-inline:1px solid var(--accent);letter-spacing:.1em}.meter{height:5px;background:var(--line)}.meter>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--secondary))}
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<header class="mast"><div><span class="eyebrow">minimal / color swatch selection / BEGINNER</span><h1>Bike Shed Color Swatch Selector</h1><p class="intro">Complete color swatch selection in a bike shed scenario: includes real content, interactive controls, clear status feedback, and responsive layouts across sizes.</p></div><span class="scenario">Bike Shed</span></header>
<div class="composition-index"><section class="demo" aria-label="Bike Shed Color Swatches Selection Area"><div class="workflow-compare"><form id="workflowCompareControls" class="compare-controls"><fieldset><legend>Reference Channel</legend><label><input type="radio" name="workflowChannel" value="A" checked>A · Bike Shed Manual Mode</label><label><input type="radio" name="workflowChannel" value="B">B · Bike Shed Smart Mode</label></fieldset><label>Device Load Weight<input id="workflowCompareWeight" type="range" min="10" max="90" value="50"><output id="workflowCompareWeightValue">50 %</output></label><label><input id="workflowCompareFreeze" type="checkbox">Freeze current version</label><button id="workflowCompareCapture" class="action primary" type="button">Sample and apply scenario</button><ol id="workflowCompareShelf" aria-label="Version Sampling Record"></ol></form><section class="compare-stage"><header><span class="eyebrow">Bike Shed COMPARE</span><h2>Bike shed dual-version comparison</h2><output id="workflowCompareLive">Version A waiting for sampling</output></header><section id="workflowCore" class="workflow-core compare-core" data-compare-channel="A" style="--compare-split:50%"><!-- 11DZ_CORE_START:controls-selectors-color-swatches --><section class="swatch-studio"><header><div><span class="eyebrow">COLOR SWATCHES</span><h2>Bike shed color swatches</h2><p>Put swatches, contrast cues, and recommended uses into one control panel.</p></div><output id="swatchContrast">Current contrast: High</output></header><div class="swatch-studio-grid"><fieldset class="swatch-rail"><legend>Choose theme color</legend><label style="--swatch:#1f9d8a"><input type="radio" name="themeColor" value="#1f9d8a" data-color-index="0" checked data-core-bridge="controls-selectors-color-swatches"><span><i aria-hidden="true"></i><b>Turquoise</b><small>#1f9d8a</small></span></label><label style="--swatch:#e5673f"><input type="radio" name="themeColor" value="#e5673f" data-color-index="1"><span><i aria-hidden="true"></i><b>Sunset</b><small>#e5673f</small></span></label><label style="--swatch:#4b5cc4"><input type="radio" name="themeColor" value="#4b5cc4" data-color-index="2"><span><i aria-hidden="true"></i><b>Indigo</b><small>#4b5cc4</small></span></label><label style="--swatch:#d39a27"><input type="radio" name="themeColor" value="#d39a27" data-color-index="3"><span><i aria-hidden="true"></i><b>Golden Sand</b><small>#d39a27</small></span></label><label style="--swatch:#a94268"><input type="radio" name="themeColor" value="#a94268" data-color-index="4"><span><i aria-hidden="true"></i><b>Berry</b><small>#a94268</small></span></label></fieldset><aside id="swatchPreview" class="swatch-inspector" style="--chosen:#1f9d8a"><span>THEME BOARD</span><strong id="swatchName">Turquoise</strong><p id="swatchHex">#1f9d8a</p><ul id="swatchChecklist"><li>title button</li><li>Hint tags</li><li>Data Focus</li></ul><button type="button">Apply Current Theme</button></aside></div></section><!-- 11DZ_CORE_END --></section></section></div><p id="status" class="status" role="status" aria-live="polite"></p></section><aside class="index-mark" aria-hidden="true"><strong>05</strong><span>Bicycle Shed FIELD INDEX</span></aside></div>
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<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:controls-selectors-color-swatches */
const swatchInputs=[...document.querySelectorAll('input[name="themeColor"]')];const swatchPreview=document.querySelector('#swatchPreview');const swatchName=document.querySelector('#swatchName');const swatchHex=document.querySelector('#swatchHex');const swatchContrast=document.querySelector('#swatchContrast');const swatchChecklist=document.querySelector('#swatchChecklist');const swatchLabel=input=>input.closest('label').querySelector('b').textContent;function renderSwatchInspector(input){const color=input.value;const name=swatchLabel(input);const contrast=['High','middle','High','middle','High'][swatchInputs.indexOf(input)]||'High';swatchPreview.style.setProperty('--chosen',color);swatchName.textContent=name;swatchHex.textContent=color.toUpperCase();swatchContrast.textContent='Current comparison:'+contrast;swatchChecklist.replaceChildren(...['title button','Hint tags','Data Focus'].map((label,index)=>{const item=document.createElement('li');item.textContent=name+' · '+label+' · '+['Primary','Auxiliary use','Accent'][index];return item;}));announce('Primary color switched to '+name);}swatchInputs.forEach(input=>input.addEventListener('change',()=>renderSwatchInspector(input)));renderSwatchInspector(swatchInputs.find(input=>input.checked)||swatchInputs[0]);
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"controls-selectors-color-swatches","selector":"[data-core-bridge=\"controls-selectors-color-swatches\"]","mode":"radio","key":"ArrowRight"};const workflowBridgeCore=document.querySelector('#workflowCore');const workflowBridgeControl=workflowBridgeCore.querySelector(workflowBridgeSpec.selector);if(!workflowBridgeControl)throw new Error('Missing core bridge: '+workflowBridgeSpec.name);const workflowBridgeControlledId=workflowBridgeControl.getAttribute('aria-controls');const workflowBridgeControlled=workflowBridgeControlledId?document.getElementById(workflowBridgeControlledId):null;workflowBridgeCore.dataset.workflowBridge=workflowBridgeSpec.name;workflowBridgeCore.dataset.workflowVersion='0';function workflowBridgeSerialize(){const visualNode=workflowBridgeCore.firstElementChild||workflowBridgeCore;const visual=getComputedStyle(visualNode);const outputs=[...workflowBridgeCore.querySelectorAll('output,[role="status"],[aria-live],meter,progress')].map(node=>node.textContent.trim()+'|'+node.getAttribute('aria-valuenow')+'|'+node.getAttribute('value'));const canvas=[...workflowBridgeCore.querySelectorAll('canvas')].map(node=>{try{return node.toDataURL().slice(-160);}catch{return 'canvas-unavailable';}});return JSON.stringify({html:workflowBridgeCore.innerHTML,status:statusOutput.textContent,outputs,canvas,visual:[visual.display,visual.visibility,visual.opacity,visual.transform,visual.filter,visual.backgroundColor,visual.width,visual.height],scroll:workflowBridgeSpec.mode==='scroll'?workflowBridgeControl.scrollTop:null});}let workflowBridgeLastEffect=workflowBridgeSerialize();function workflowBridgeSummary(){const label=(workflowBridgeControl.getAttribute('aria-label')||workflowBridgeControl.textContent||workflowBridgeControl.value||workflowBridgeSpec.name).trim().replace(/\s+/g,' ').slice(0,72);return label+' · Core Version '+workflowBridgeCore.dataset.workflowVersion;}function workflowBridgeCommit(){const effect=workflowBridgeSerialize();if(effect===workflowBridgeLastEffect)return {changed:false,summary:workflowBridgeSummary()};workflowBridgeLastEffect=effect;workflowBridgeCore.dataset.workflowVersion=String(Number(workflowBridgeCore.dataset.workflowVersion||0)+1);return {changed:true,summary:workflowBridgeSummary()};}function workflowBridgeScheduleCommit(){queueMicrotask(workflowBridgeCommit);setTimeout(workflowBridgeCommit,0);}workflowBridgeControl.addEventListener("keydown",workflowBridgeScheduleCommit);workflowBridgeControl.addEventListener('input',workflowBridgeScheduleCommit);workflowBridgeControl.addEventListener('change',workflowBridgeScheduleCommit);const workflowBridgeStateTargets=new Set(workflowBridgeCore.querySelectorAll('dialog'));if(workflowBridgeControlled&&workflowBridgeCore.contains(workflowBridgeControlled))workflowBridgeStateTargets.add(workflowBridgeControlled);workflowBridgeStateTargets.forEach(target=>['close','cancel','toggle'].forEach(eventName=>target.addEventListener(eventName,workflowBridgeScheduleCommit)));function workflowBridgeActivate(){workflowBridgeControl.focus();const radios=[...workflowBridgeCore.querySelectorAll('input[type="radio"]')].filter(input=>input.name===workflowBridgeControl.name&&!input.disabled);const current=Math.max(0,radios.findIndex(input=>input.checked));radios[(current+1)%radios.length].click();const result=workflowBridgeCommit();setTimeout(workflowBridgeCommit,0);return result;}function workflowBridgeReset(){workflowBridgeCore.dataset.workflowVersion='0';workflowBridgeLastEffect=workflowBridgeSerialize();}
const workflowCompareCore=document.querySelector('#workflowCore');const workflowCompareWeight=document.querySelector('#workflowCompareWeight');const workflowCompareState={channel:'A',weight:50,frozen:false,snapshots:[]};function workflowCompareFingerprint(){const controls=[...workflowCompareCore.querySelectorAll('input,select,textarea')];const outputs=[...workflowCompareCore.querySelectorAll('output,[role="status"],strong')].map(node=>node.textContent.trim()).filter(Boolean);return {controlValues:controls.map(control=>control.type==='checkbox'||control.type==='radio'?control.checked:control.value),summary:outputs.slice(0,4).join(' / '),nodes:workflowCompareCore.querySelectorAll('*').length};}function workflowCompareDrive(){workflowCompareCore.dataset.compareChannel=workflowCompareState.channel;workflowCompareCore.style.setProperty('--compare-split',workflowCompareState.weight+'%');document.querySelector('#workflowCompareWeightValue').textContent=workflowCompareState.weight+' %';document.querySelector('#workflowCompareLive').textContent=workflowCompareState.channel+' Version · '+workflowCompareState.weight+' %'+(workflowCompareState.frozen?' · Frozen':'');announce('Bike shed is being viewed '+workflowCompareState.channel+' Version');}function workflowCompareCapture(source){const bridge=workflowBridgeActivate();const snapshot={...workflowCompareFingerprint(),channel:workflowCompareState.channel,weight:workflowCompareState.weight,source,bridge:bridge.summary};workflowCompareState.snapshots.push(snapshot);const item=document.createElement('li');item.innerHTML='<b>'+snapshot.channel+'</b><span>'+(snapshot.summary||snapshot.bridge)+'</span><small>'+snapshot.weight+' % · '+snapshot.bridge+'</small>';document.querySelector('#workflowCompareShelf').prepend(item);announce('sampled '+snapshot.channel+' Version and application scenarios · '+bridge.summary);}document.querySelectorAll('[name="workflowChannel"]').forEach(input=>input.addEventListener('change',()=>{workflowCompareState.channel=input.value;workflowCompareDrive();}));workflowCompareWeight.addEventListener('input',()=>{workflowCompareState.weight=Number(workflowCompareWeight.value);workflowCompareDrive();});document.querySelector('#workflowCompareFreeze').addEventListener('change',event=>{workflowCompareState.frozen=event.currentTarget.checked;workflowCompareDrive();});document.querySelector('#workflowCompareCapture').addEventListener('click',()=>workflowCompareCapture('Button Sampling'));workflowCompareCore.addEventListener('dblclick',()=>workflowCompareCapture('Main view double-click'));workflowCompareDrive();
workflowBridgeReset();
</script>
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