Anyone know how to change mobile menu icon in Blocksy?

I've tried 3 different CSS attempts of codes in Additional CSS. Also searched a lot the customization options. The hamburger is gray and its too dark. I tried right clicking and inspecting the hamburger as an element but there is no color code anywhere.

<svg class="ct-icon" width="18" height="14" viewBox="0 0 18 14" aria-hidden="true" data-type="type-1">

    <rect y="0.00" width="18" height="1.7" rx="1"></rect>

    <rect y="6.15" width="18" height="1.7" rx="1"></rect>

    <rect y="12.3" width="18" height="1.7" rx="1"></rect>

</svg>