Custom light yellow background color for the light theme in Visual Studio Code editor.

native.main.css

/* Code/app-0.5.0/resources/app/client/vs/monaco/ui/workbench/native/native.main.css */

.monaco-editor.vs,
.monaco-editor.vs .zone-widget .monaco-editor {
	background-color: #fdf6e4;
}

.monaco-editor,
.monaco-editor-background {
	background-color: #fdf6e4;
}
.monaco-workbench.vs > .part.editor > .content .title {
	background-color: #fdf6e4;
}
.monaco-workbench-container .monaco-editor .glyph-margin {
	background: #fdf6e4;
}
.monaco-workbench > .part.editor > .content .title .title-actions, .monaco-workbench.vs > .part.editor > .content .title .title-label .state-description {
	background-color: #fdf6e4;
}