The size of the pick applet is controlled in theme-black.css in the below style class:
.ui-simpledialog-container
{
overflow:scroll !important;
border-radius:10px;
max-height: 85% !important;
max-width: 95% !important;
}
The font size can be changed from theme-black.css in the following css:
.ui-li-heading {
font-family: Helvetica Neue ;
font-size: 19px; /*15pt;*/ /*100%; */
font-weight: bold;
display: block;
margin: .5em 0 0 .4em;
text-overflow: ellipsis;
overflow: hidden;
white-space: nowrap;
}
.ui-li-desc {
font-family: Helvetica Neue ;
font-size: 17px;
font-weight: normal;
display: block;
margin: .6em;
text-overflow: ellipsis;
overflow: hidden;
white-space: nowrap;
max-width: 90%;
}
.scrollviewcontainer {
min-height: 55px;
max-height: 310px;
}
.ui-simpledialog-container
{
overflow:scroll !important;
border-radius:10px;
max-height: 65% !important;
max-width: 45% !important;
}
The above tags controls the look of Pick Applet and its controls. Changing the parameters will give the desired results.