Change select area color of dropbox and file upload

I am using a dark theme for my website. So, after putting up dropbox and file upload in the form, it just shows in white color which seems really out of place. How do I change it?
I have the following code for other color adjustments:

/** WPFORMS WPFORMSLABEL **/
.wpforms-form label{
color:rgb(200, 200, 200)!important;
}
 
/** WPFORMS Input Textarea **/
.wpforms-form input, .wpforms-form textarea{
background-color:rgba(34,32,42)!important;
}
 
/** WPFORMS BUTTONCOLOR **/
.wpforms-form button{
background-color:rgb(8, 152, 166)!important;
}
 
/** WPFORMS SUBMITBUTTON **/
button.wpforms-submit{
color:#FFFFFF!important;
background-color:rgb(93,58,189)!important;
}
 
/** WPFORMS SUBMITBUTTON Hover **/
button.wpforms-submit:hover{
color:rgb(255, 255, 255)!important;
background-color:rgb(60,42,117)!important;
}