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diff --git a/servo/components/style/values/generics/ui.rs b/servo/components/style/values/generics/ui.rs
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+++ b/servo/components/style/values/generics/ui.rs
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+//! Generic values for UI properties.
+
+use crate::values::specified::ui::CursorKind;
+use std::fmt::{self, Write};
+use style_traits::{CssWriter, ToCss};
+
+/// A generic value for the `cursor` property.
+///
+/// https://drafts.csswg.org/css-ui/#cursor
+#[derive(
+    Clone,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToResolvedValue,
+    ToShmem,
+)]
+#[repr(C)]
+pub struct GenericCursor<Image> {
+    /// The parsed images for the cursor.
+    pub images: crate::OwnedSlice<Image>,
+    /// The kind of the cursor [default | help | ...].
+    pub keyword: CursorKind,
+}
+
+pub use self::GenericCursor as Cursor;
+
+impl<Image> Cursor<Image> {
+    /// Set `cursor` to `auto`
+    #[inline]
+    pub fn auto() -> Self {
+        Self {
+            images: Default::default(),
+            keyword: CursorKind::Auto,
+        }
+    }
+}
+
+impl<Image: ToCss> ToCss for Cursor<Image> {
+    fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
+    where
+        W: Write,
+    {
+        for image in &*self.images {
+            image.to_css(dest)?;
+            dest.write_str(", ")?;
+        }
+        self.keyword.to_css(dest)
+    }
+}
+
+/// A generic value for item of `image cursors`.
+#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToResolvedValue, ToShmem)]
+#[repr(C)]
+pub struct GenericCursorImage<Image, Number> {
+    /// The url to parse images from.
+    pub image: Image,
+    /// Whether the image has a hotspot or not.
+    pub has_hotspot: bool,
+    /// The x coordinate.
+    pub hotspot_x: Number,
+    /// The y coordinate.
+    pub hotspot_y: Number,
+}
+
+pub use self::GenericCursorImage as CursorImage;
+
+impl<Image: ToCss, Number: ToCss> ToCss for CursorImage<Image, Number> {
+    fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
+    where
+        W: Write,
+    {
+        self.image.to_css(dest)?;
+        if self.has_hotspot {
+            dest.write_char(' ')?;
+            self.hotspot_x.to_css(dest)?;
+            dest.write_char(' ')?;
+            self.hotspot_y.to_css(dest)?;
+        }
+        Ok(())
+    }
+}
+
+/// A generic value for `scrollbar-color` property.
+///
+/// https://drafts.csswg.org/css-scrollbars-1/#scrollbar-color
+#[derive(
+    Animate,
+    Clone,
+    ComputeSquaredDistance,
+    Copy,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToAnimatedValue,
+    ToAnimatedZero,
+    ToComputedValue,
+    ToCss,
+    ToResolvedValue,
+    ToShmem,
+)]
+#[repr(C, u8)]
+pub enum GenericScrollbarColor<Color> {
+    /// `auto`
+    Auto,
+    /// `<color>{2}`
+    Colors {
+        /// First `<color>`, for color of the scrollbar thumb.
+        thumb: Color,
+        /// Second `<color>`, for color of the scrollbar track.
+        track: Color,
+    },
+}
+
+pub use self::GenericScrollbarColor as ScrollbarColor;
+
+impl<Color> Default for ScrollbarColor<Color> {
+    #[inline]
+    fn default() -> Self {
+        ScrollbarColor::Auto
+    }
+}