SASS操作颜色倍数折旧了吗？

Question

执行以下操作的新方法是什么？

border-color: transparent lighten((#F1CE18 * 1.05), 5%);

CodeKit警告我：

DEPRECATION WARNING on line 104 of 
/Users/r/Documents/anglicans/wordpress/wp-content/themes/afl_theme1/scss/_header.scss:
The operation `#F1CE18 times 1.05` is deprecated and will be an error in future versions.

我已经查看了：lang.com/documentation/Sass/Script/Functions.html#other_color_functions 但找不到正确的方法。