fix: Improve image captcha contrast for dark mode#36265
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silverwind merged 4 commits intogo-gitea:mainfrom Jan 24, 2026
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The image captcha was using random colors which often resulted in poor contrast against dark backgrounds, making it difficult or impossible for users to read in dark mode. This fix configures a color palette with high-contrast colors that provide good visibility in both light and dark themes, improving accessibility and user experience. Fixes go-gitea#36255 Signed-off-by: majiayu000 <1835304752@qq.com>
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Because this was generated by AI, I gave it a test. Dark blue was too dark for dark mode, I removed it. Other colors are fine in both modes. 
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@silverwind Thanks for the review and change! |
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* giteaofficial/main: Normalize guessed languages for code highlighting (go-gitea#36450) Add `knip` linter (go-gitea#36442) Fix various bugs (go-gitea#36446) Update tool dependencies (go-gitea#36445) Update JS dependencies, adjust webpack config, misc fixes (go-gitea#36431) fix: Improve image captcha contrast for dark mode (go-gitea#36265) Refactor template render (go-gitea#36438) Add documentation for markdown anchor post-processing (go-gitea#36443) Fix markup heading parsing, fix emphasis parsing (go-gitea#36284) Front port changelog for 1.25.4 (go-gitea#36432) Bugfix: Potential incorrect runID in run status update (go-gitea#36437) Restrict branch naming when new change matches with protection rules (go-gitea#36405)
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Summary
This PR fixes #36255
The image captcha was using random colors which often resulted in poor contrast against dark backgrounds, making it difficult or impossible for users to read in dark mode.
Changes
services/context/captcha.goTesting
gitea.com/go-chi/captchalibraryGenerated with Claude Code