littlestargazerx-deactivated201 asked: Hi. I'm new to Tumblr and not that advanced with html. I was wondering, where in the code for the layout can I change the sidebar title colour from red to yellow?

Hi, I nv tested it, but I think you can add the below in your Custom CSS

#sidebar h3, #sidebar h3 a {
    color: #F2E535; /* change this to the color you want */
}