docs: speed up theme pages#2583
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ToMESSKa
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joyenjoyer
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INSTUI-5059
Summary
Speeds up theme page navigation by caching parseColor results in ColorCard and replacing TruncateText in ColorName with native CSS truncation, eliminating per-card binary-search reflow loops.
Test plan
Compare the loading performance of an older theme page, for example:
https://instructure.design/pr-preview/pr-2568/canvas
with the updated version:
https://instructure.design/pr-preview/pr-2583/canvas
Open the browser DevTools and use the Performance tab to record and compare page loads. The improvement should be visible in the performance metrics and timeline.
Co-Authored-By: 🤖 Claude