khguide/public/styles/common/colors.css

:root {
	--bg-color: #333;
	--bg-dark-color: #252525;
	--bg-light-color: #545454;
	--text-color: #fff;

	--link-color: #0f0;
	--link-hover-color: #9dff9d;
	--link-visited-color: #00a200;

	--button-bg-color: #444;
	--button-hover-bg-color: #4f4f4f;
	--button-active-bg-color: #3f3f3f;
	--button-border-color: #555;

	--primary-color: #00aa00;
	--primary-light-color: #60de60;

	--error-color: hsl(2, 68%, 53%);
	--error-color-lighter: hsl(2, 68%, 63%);
}