How to change orange background on cv card - porfolio when you hover on image

You can replace it via files. Please, enter your files via FTP in this way: wp-content \ themes \ plugins \ trx_addons \ css  \ trx_addons.css and replace  in this code

.trx_addons_hover_mask {

position: absolute;

overflow: hidden;

top: 10px;

left: 10px;

bottom: 10px;

right: 10px;

filter: alpha(opacity=0);

opacity: 0;

background-color: rgba(239,167,88,0.8);

-webkit-transition: all 0.3s 0.1s ease-out;

-moz-transition: all 0.3s 0.1s ease-out;

-ms-transition: all 0.3s 0.1s ease-out;

transition: all 0.3s 0.1s ease-out;


with the color you need here 

background-color: rgba(239,167,88,0.8);