setTimeout(function(){        

        //以下修改文本控件、数字控件的属性        

        $(".fr-texteditor").css({"background":"rgba(0,0,0,0)","color":"#c0c0c0"});//设置背景和字体颜色

        $(".fr-texteditor").css("border","none");//去除边框

        //以下修改下拉单选控件，下拉复选控件和日期控件的属性

        $(".fr-trigger-text.fr-border-box").css({"background":"rgba(0,0,0,0)"});//设置控件本身背景

        $(".fr-trigger-text").find("input").css({"background":"rgba(0,0,0,0)","color":"#c0c0c0"});//设置控件输入框背景和字体颜色

        $(".fr-trigger-text").css("border","none");//去除边框

      $(".fr-trigger-btn-up").css({"background":"rgba(0,0,0,0)","border":"none"});//设置控件右侧点击按钮        

},100)

这个是我的

初始化后

setTimeout(function() {

$(".fr-texteditor").css('border':'unset');

}, 100);

-----------------

etTimeout(function(){               

        //以下修改文本控件、数字控件的属性        

        $(".bi-sign-editor.bi-abs.bi-v").css({"background":"rgba(1,30,52,1)","color":"#c0c0c0"});//设置背景和字体颜色

        $(".bi-sign-editor.bi-abs.bi-v").css("border","none");

        $(".bi-editor.bi-focus-shadow.bi-abs").css("border","none");

        $(".bi-popper.bi-combo.bi-v.bi-combo-hover").css("border","none");

        $(".bi-basic-button.cursor-pointer.bi-text-button.sign-editor-text.bi-label.bi-text.bi-water-mark").css("border","none");

        $(".bi-multi-select-check-selected-button.bi-basic-button.cursor-pointer.bi-text-button.bi-high-light-background.count-tip.bi-label.bi-f-c.bi-f-h.v-middle.h-center").css("border","none");

        $(".bi-searcher.bi-v").css("border","none");//去除边框

        $(".bi-searcher.bi-v").css({"background":"1,30,52,1"});//设置控件本身背景

        $(".bi-popper.bi-combo.bi-v").find("input").css({"background":"rgba(1,30,52,1)","color":"#c0c0c0"});//设置控件输入框背景和字体颜色

        $(".bi-popper.bi-combo.bi-v").css("border","none");//去除边框

        $(".bi-basic-button.cursor-pointer.bi-icon-button.horizon-center.bi-trigger-icon-button.overflow-hidden.pull-down-font.trigger-icon-button").css({"background":"rgba(1,30,52,1)","border":"none"});//设置控件右侧点击按钮

        $("div[widgetname='日期']") .css("border", "none"); //去除边框 

},100)

这样试一下？