style: billboard end color

[fit2-zhao]

【【合同】看板样式-完结阶段icon颜色和进行中一样未区分】
https://www.tapd.cn/tapd_fe/34675357/bug/detail/1134675357001069663

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Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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