The material library
All 78 materials by category, with a picture and a line on what each one looks like.
Open the library with Browse on the Material page, then click a category on the left to see just that group. This page goes through every one of them. How to use a material (filling, brushing, recolouring) is in Materials.
How they work
A material is a ready-made pattern that is painted onto the part you fill or brush. Each one is made to lay a particular way, and the browser knows which: most wrap around the part, a few are built to lay differently. In the browser’s filter drawer, Lay lists the ways (Wraps around, World and 3D) with how many materials lay each way, and narrows the library to the one you pick. A way that no material holds isn’t offered. It works with search and in every category.
The card on the Material page says how a material takes your colour: fixed colours, tints with your colour or its glow takes your colour. Whichever it says, Hue, Saturation, Vibrance, Brightness and Contrast recolour it, and the Colours list changes its own colours one by one. Materials appear in the browser at once, download the first time you use one, and stay on your computer after that.
Basic
Two plain starting points.

- Base: a neutral grey, rough surface to build on.
- Honey Moon: a soft yellow glow that warms to orange at the bottom.
Egg shells
Glossy shells made for eggs.

- Cosmic: deep purple with tiny stars and a bright highlight.
- Jelly: a blue shell with an orange cap and a red base.
- Stargazing: a bright, glossy sky blue.
Nature
Animals, plants and ground.

- Fly Agaric: a red toadstool cap with white spots.
- Fawn: a brown coat with white spots.
- Turtle Shell: green scutes with dark seams.
- Cracked Earth: dry orange-brown plates with cracks between them.
- Cartoon Bark: warm wood with dark grain lines.
- Meadow Zigzag: green with wavy lines.
- Giraffe: orange patches parted by cream lines.
- Bamboo: green canes with ridges.
- Paw Prints: white with soft pink paw prints.
- Colourful Paws: white with bright, multicoloured paw prints.
- Cactus: green ribs dotted with spines.
- Dragon Scales: overlapping red and orange scales.
Sand
Warm, soft ground.

- Plain Sand: smooth, pale sand.
- Desert Dunes: layered, wavy dunes.
Water

- Pool Caustics: blue water with a net of white light, like a pool floor.
Gems
Crystals and rainbow stones.

- Ruby Crystal: red facets with sparkles.
- Holo Crystal: blue holographic facets.
- Ice Shards: pale blue ice with sparkles.
- Rainbow Crystal: crystals that shift through every colour.
- Rainbow Stones: white stones with glowing rainbow seams.
- Rainbow Lines: white with thin rainbow contour lines.
Gradients
Smooth colour blends.

- Sunset: pink and purple melting into peach.
- Nebula: a purple and pink space cloud with stars.
- Cotton Candy: soft white, pink and mint.
- Deep Ocean: bright teal sinking into deep blue.
Rock and lava
Stone you can build with, and fire.

- Ember Crust: dark rock with glowing orange cracks.
- Lava Flow: flowing bands of red, orange and yellow.
- Stone Plates: rounded grey plates.
- Stacked Stone: grey stones laid like bricks.
- Worn Stone Plates: the same plates, weathered.
- Worn Stacked Stone: the same stacked stones, weathered.
- Lava (pure): glowing, molten orange.
Candy

- Peppermint Swirl: red and white spiral stripes.
- Cupcake: white icing with sprinkles over chocolate.
Fabric
Cloth with stitches.

- Voodoo Doll: beige cloth, dark stitches and a red patch.
- Patchwork Doll: patches of dots, stripes and plain cloth joined by stitches. Its Colours are Patch A, Patch B, Seams and Stitches.
Neon
Glowing lines on dark.

- Neon Circuit: blue and pink circuit lines.
- Hacker Circuit: green circuit lines.
- Bold Circuit: thick, white glowing lines.
- Holographic Grid: a cyan grid.
- Glitch: streaks of purple and cyan, like a broken screen.
Space
Night skies.

- Constellation Night: stars joined by lines on dark blue.
- Moonlight: purple with yellow stars and a crescent moon.
- Deep Starfield: a dark sky with a band of stars.
- Pastel Galaxy: pink and blue clouds with stars.
- Shooting Stars: a dark purple sky with streaks.
Autumn

- Harvest Plaid: orange and brown plaid.
- Candy Corn: bands of orange, yellow and white.
- Maple Print: cream with red and orange maple leaves.
- Leaf Mosaic: a mosaic of orange, yellow and red cells.
- Apple Skin: red with fine vertical streaks.
- Autumn Sunset: pink and purple fading to orange.
- Chestnut: glossy brown stripes over a pale base.
Winter
The biggest category.

- Ice Cells: pale blue cells with blue seams.
- Snowfall: white snow dots on dark.
- Snowflake Print: blue with white snowflakes.
- Frozen Lake: pale ice with cracks.
- Igloo Blocks: white blocks with blue lines.
- Holiday Plaid: red and green plaid with gold lines.
- Nordic Knit: red knit with a white snowflake pattern.
- Winter Argyle: blue and white diamonds.
- Gingerbread Dough: brown with white icing swirls.
- Gingerbread Icing: red with a gingerbread man.
- Ornament Glass: a glossy red bauble with gold stripes.
- Winter Gradient: light blue deepening to blue.
- Cocoa Swirl: chocolate with cream swirls.
Fun

- Riveted Metal: grey plates with rivets.
- Watermelon Rind: green stripes.
- Race Checker: black and white checks.
- Disco Mirror: mirror tiles with a few coloured ones.
- Beach Ball: blue, yellow and red panels.
- Red Brick: red bricks with pale mortar.
- Orange Peel: dimpled orange.
Grow
The last entry in the browser’s rail is Grow: things that grow out of a part rather than lie on it, such as rocks, crystals, flowers and snow. They have their own page: Grow.