Hi Deborah-
Thanks for reaching out, and for choosing the Linx WordPress theme. You’re right that the background texture is still hard-coded into that theme.
First, the “gray band” at the top. To fix this, I don’t recommend using CSS. Instead, change the first color in your palette in the Customize > Colors menu to white:
Second, the background texture. You will use CSS for this, but it doesn’t go into a file. Instead, navigate to Customize > Advanced > Custom JS & CSS and use the Custom Theme CSS field. Paste this code in:
body.custom-background,
.page-template-page_home .entry-content,
.site-content,
.site-footer, .mce-content-body {
background-image: none !important;
}
.entry-title {
background-image: none !important;
}