vue project vant tab to change the color of the label

找了几种方法，只有下面这个方法是生效的：

< Van-tabs
 v-Model = "the Active" 
Sticky 
title-the Active-Color = "# 144a9e" // selected tab text color 
Color = "# 144a9e" // following the underline color 
@click = "tabClick" >