format texti input as   '\e]4;1;%s\a\e[0;41m  \e[m' "$1" to show color text directly 

I find bash can use  **e]xxx**  .....  **e[m**  to define text color directly.  This way is   more flexisible than using ui style.  
add api:
~~~go
func colortext(s txt,color tcell.color)string{
colorbeign:= getcolorbegin(color)
colorend:=getclororend(color)
return fmt.sprintf("%s %s %s ",colorbegin, txt,colorend)
}