Change jQuery icon color

[JZL]

where do I change color on jQuery standard icons,  from gray to white. Where do I change the filename from  ui-icons_777777_256x240 to point at  ui-icons_ffffff_256x240

[JZL]

FOUND IT , ADD


in custom.css

.ui-button .ui-icon {
    background-image: url("images/ui-icons_ffffff_256x240.png");
}