mberwing Try add this to custom.css file and change color code accordingly:
.off-canvas-toggle .patty::before, .off-canvas-toggle .patty::after, .off-canvas-toggle .patty{background-color: #fff !important;} /* for menu toggle */
#t3-header .fa-search::before{color: #fff !important;}
Kindly ensure to clear your browser cache if changes dont reflect
