Simple categories matching colourful:

• food,
• item,
• vegetable,
• shrub,
• animal,
• tradition,
• invertebrate,
• veg,
• bird,
• object,
• furnishing,
• fruit,
• macaw,
• instrument,
• botanical,
• character,
• annual,
• fish,
• material,
• berry,
• artwork,
• plant,
• creature,
• green,
• flower,
• herb,
• insect,
• thing,
• fabric,
• butterfly,
• product,
• stone,
• paper,
• activity,
• veggie,
• ornament,

Members with property colourful:

• tomato,
• apricot,
• carrot,
• azalea,
• pear,
• jay,
• wood_cranesbill,
• orange,
• broccoli,
• harp,
• blueberry,
• parakeet,
• heather,
• duck,
• velvet,
• chaffinch,
• mat,
• beetroot,
• pumpkin,
• madam,
• shrimp,
• clams,
• professor,
• myna,
• bluebell,
• guava,
• brocade,
• apple,
• sergeant,
• fish,
• strawberry,
• real_diamond,
• caterpillar,
• tape,
• snapper,
• lettuce,
• bicycle_parade,
• banner,
• black_tetra,
• green,
• cardinal,
• malachite,
• kangaroo,
• goose,
• classical_dance,
• hummingbird,
• puffer_fish,
• salvia,
• cucumber,
• pelican,
• triggerfish,
• pea,
• lavender,
• amethyst,
• lychee,
• marsh_fritillary,
• rayons,
• cows,
• grape,
• indian_roller,
• shaver,
• aquamarine,
• cockatoo,
• lobelia,
• butterfly,
• eel,
• rose-quartz_heart,
• fruit,
• scarlet_macaw,
• belt,
• cardboard,
• alyssum,
• parrot_fish,
• bonnet,
• perspex,
• golden_oriole,
• pansy,
• landscape,
• frangipani,
• petunia,
• kingfisher,
• lion,
• cichlid,
• green_kingfisher,
• wild_angelica,
• web_graphics,
• angelfish,
• pencil,
• match,
• papaya,
• white_opal,
• train,
• emperor_tetra,
• steamed_carrot,
• computer-science_man,
• pineapple,
• barracuda,
• glowworm,
• iguana,
• african_marigold,
• large_octopus,
• banana,
• chickadee,
• bird,
• camomile,
• cymbidium,
• regal_amethyst,
• spinach,
• carnelian,
• bracelet,
• bougainvillea,
• beetle,
• watercress,
• wood,
• silks,
• furniture,
• rainbow_wrasse,
• woodpecker,
• poinsettia,
• cherry,
• garnet,
• parrotfish,
• grey_wagtail,
• giant_anemone,
• silk,
• angel_fish,
• ceramics,
• grouper,
• bookmark,
• marigold,
• berry,
• cowfish,
• red_poppy,
• poster_competition,
• mouse,
• cotton,
• boxfish,
• agate,
• taffeta,
• cranberry,
• willow_herb,
• prune,
• cube,
• ball,
• jasper,
• spinel,
• street_rally,
• rug,
• turtle_dove,
• goldfinch,
• melon,
• ibis,
• green_honeycreeper,
• watermelon,
• sitka_valerian,
• dragonfly,
• traditional_costume,
• finger_banana,
• environmental_parade,
• hoopoe,
• verbena,
• poster,
• mother,
• radish,
• green_parrot,
• ruby,
• ragwort,
• horn_bird,
• moth,
• parade,
• baby_carrot,
• anemone,
• bike_parade,
• dolphin,
• book,
• cinderella,
• sage,
• mammal,
• fleabane,
• cantaloupe,
• daisy,
• cherry_tomato,
• stress_ball,
• goldcrest,
• plastic_strip,
• yellow_oriole,
• nectarine,
• necklace,
• peacock,
• melon_man,
• pen_ink,
• soy,
• honesty,
• papers,
• werewolf,
• fancy_paper,
• asian_mango,
• essay,
• metallic_paper,
• doctor,
• spanish_bluebell,
• primula,
• sponge,
• larkspur,
• mozzarella,
• turquoise_stone,
• daffodil,
• orange_dove,
• prolific_bougainvillea,
• lemon,
• maroon_oriole,
• kiwi,
• gold_macaw,
• precious_stone,
• dragon,
• feverfew,
• mountain_toucan,
• bag,
• partridge,
• surgeonfish,
• holly,
• zebra,
• pipefish,
• wool,
• sapphire,
• pin,
• globeflower,
• street_parade,
• black_currant,
• toucan,
• blue_parrotfish,
• restharrow,
• small_tortoiseshell,
• citrine,
• bearded_iris,
• romantic_green,
• chair,
• tree,
• hyssop,
• raspberry,
• magazine,
• blackberry,
• napkin,
• hat,
• ferris-wheel_couch,
• chrysanthemum,
• viola,
• tree_planting,
• brazilian_reptile,
• zucchini,
• calendula,
• mask,
• feather,
• chamomile,
• peach,
• spectacles,
• cleanup_campaign,
• stealthy_crabs,
• monster,
• red_grouper,
• carving,
• turquoise,
• coral,
• oriole,
• nudibranch,
• hibiscus,
• textile,
• dill,
• robin,
• gold_fish,
• peacock_tail,
• babbler,
• oxeye_daisy,
• parrot,
• jaspers,
• blue_borage,
• mango,
• flamingo,
• balloon,
• kale,
• organza,
• chicken,
• card,
• squirrelfish,
• art_competition,
• car,
• flower,
• heron,
• emerald,
• polka-dot_dress,
• fabric,
• wild_salmon,