Sounds logical. However, I wasn't able to sort it out for myself... looks like all the Juicebox CSS was very specific and no overlaps in class. So, here's the three bits I added with "color: #fff" added to each:

.jb-caption .jb-caption-title {
    font-size: 17px;
    cursor:default;
    color: #fff;
}

.jb-caption p
{
    margin-bottom: 0 !important;
    margin-right: 72px;    /* equal to "width" in .jb-cap-frame .jbac-number; margin-top is set in code in order to hide the top margin when there is no desc */
    margin-left: 0;
    font-size: 13px;
    line-height: 23px;
    cursor:default;
    color: #fff;
}
.jb-caption a {
    color: #fff;
}

Here's the code for my style.css page:

/* CSS Reset
Copyright (c) 2015, Sandra Lamb, All rights reserved.
*/

body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,form,input,textarea,p,th,table{border-collapse:collapse;border-spacing:0;}li{list-style:none;}h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}q:before,q:after{content:'';}
   
/* Default Page Setup */

A:link {text-decoration: none; color: #FFFFFF;}
A:visited {text-decoration: none; color: #FFFFFF;}
A:hover {text-decoration: none; color: #9E809E;}
A:active {text-decoration: none; color: #FFFFFF;}

#content {margin: 50px auto; width: 824px;}

IMG {border: none;}

body
    {
    background-color: #473547;
    background-repeat: no-repeat;
    margin-left: 0;
    margin-top: 0;
    font-family: Arial, Verdana, Helvetica, sans-serif;
    font-size: 13px;
    font-weight: normal;
    color: #FFFFFF;
    }
   
H1
    {
    font-size:20px;
    font-weight:bold;
    color:#FFB24E;
    margin-bottom:0px;
    }
       
H2
    {
    font-size:16px;
    color:#FFB24E;
    margin-top:0;
    margin-bottom:0
    }
   
P
    {
    font-family:Arial, Helvetica, Verdana;
    font-size:14px;
    color:#3D4966
    }
   
P.date
    {
    font-size:20pt;
    color:#FFB24D
    }
   
.artistblurb
    {
    font-size: 14px;
    color:#FFFFFF
    }
   
span
    {
    font-family:Arial, Helvetica, Verdana;
    }
   
.caption
    {
    font-size: 14px;
    font-weight:bold;
    color:#FFFFFF
    }
   
.CV
    {
     font-size:14px;
     color:#FFB24D;
    }
   
.description
    {
     font-size:16px;
     font-style:italic;
     color:#D5BAD5;
    }
   
.mailfont
    {
     font-size:11px;
     color:#000000;
    }

.medium
     {
     font-size:20px;
     font-style:italic;
     color:#9E809E;
     }
     
.times
    {
    font-size: 14px;
    color:#C29FC2;
    }

.intro
    {
    font-size: 14px;
    font-style:italic;
    color:#9E809E;
    }
   
.classes
    {
    font-size: 14px;
    color:#C29FC2;
    }
   
.source
    {
    font-size: 14px;
    font-style:italic;
    color:#3D4966
    }
   
.smallhead
    {
    font-size: 16px;
    color:#FFB24D
    }
   
.smallitalichead
    {
    font-size: 16px;
    font-style:italic;
    font-weight:bold;
    color:#FFB24D;
    }
   
table
    {
     border:0px;
     border-collapse:collapse;
     border-spacing:0px;
    }

td
    { 
     border-width:0px 10px;
     padding:0px;
    }
   
.title
    {
     font-size:28px;
     color:#9E809E;
    }

Okay. Did everything you said. Seems to work for a bit, providing I restart my computer before opening the program, as trash will not completely empty because for some reason it is using some of the encrypted files, even though the program is closed. So. Restart the computer, install the program and I am fine for a short while until everything freezes again. This evening, I spent half an hour or so re-constructing a gallery by adding a few images and captions. When I was done and went to save it, it would not save and at that point would not open anything else. Again, unresponsive. My version of AIR is 18.0.0.180, which came in as an update minutes before I downloaded Juicebox 1.4.4 for the first time.

Okay, I am back after a hiatus. My brother has uploaded all of his gallery folders to the server. When I download them, my Juicebox Pro does not open the gallery. And yet, if they are viewed on the web in their non-embedded state, they seem to run fine. It's just impossible to edit anything if you can't get the program to run its own gallery. So, I would like to send a zip file of at least one of the galleries. How do I attach it, or do you have a support e-mail I can use?

Thanks Patrick. Maybe I am not crazy after all. I'm going to have a look again this weekend and see for sure. And yes, my server has been weirdly slow today.

Hi Steven. Thanks for your continued efforts. When Juicebox suddenly stopped running, that's the first thing I did; update to the most recent AIR, hoping that was the problem. No luck. I do not have any anti-virus programs installed on my Mac except for what is automatically included in my regular Apple updates. And it seems odd that they would suddenly lock me out in the middle of working. Could it be that  this might be related to a cookie or facsimile? Does Juicebox have a limit on number of galleries allowed? Is there something else I can try? I have invested dozens of hours building several galleries using SimpleViewer Pro which are becoming obsolete because they do not work on tablets. I certainly would not like to have to start from scratch with someone else's product.

And by the way, I have deleted and re-installed Juicebox Lite and it is working fine. But it just doesn't have the customization I need.