diff --git a/bookwyrm/management/commands/generate_preview_images.py b/bookwyrm/management/commands/generate_preview_images.py
new file mode 100644
index 000000000..13eaf3a68
--- /dev/null
+++ b/bookwyrm/management/commands/generate_preview_images.py
@@ -0,0 +1,48 @@
+""" Generate preview images """
+import sys
+
+from django.core.management.base import BaseCommand
+
+from bookwyrm import activitystreams, models, settings, preview_images
+
+
+def generate_preview_images():
+    """generate preview images"""
+    print("   | Hello! I will be generating preview images for your instance.")
+    print("🧑‍🎨 ⎨ This might take quite long if your instance has a lot of books and users.")
+    print("   | ✧ Thank you for your patience ✧")
+
+    # Site
+    sys.stdout.write("   → Site preview image: ")
+    preview_images.generate_site_preview_image_task()
+    sys.stdout.write(" OK 🖼\n")
+
+
+    # Users
+    users = models.User.objects.filter(
+        local=True,
+        is_active=True,
+    )
+    sys.stdout.write("   → User preview images ({}): ".format(len(users)))
+    for user in users:
+        preview_images.generate_user_preview_image_task(user.id)
+        sys.stdout.write(".")
+    sys.stdout.write(" OK 🖼\n")
+
+    # Books
+    books = models.Book.objects.select_subclasses().filter()
+    sys.stdout.write("   → Book preview images ({}): ".format(len(books)))
+    for book in books:
+        preview_images.generate_edition_preview_image_task(book.id)
+        sys.stdout.write(".")
+    sys.stdout.write(" OK 🖼\n")
+
+    print("🧑‍🎨 ⎨ I’m all done! ✧ Enjoy ✧")
+
+
+class Command(BaseCommand):
+    help = "Generate preview images"
+    # pylint: disable=no-self-use,unused-argument
+    def handle(self, *args, **options):
+        """run feed builder"""
+        generate_preview_images()
diff --git a/bookwyrm/preview_images.py b/bookwyrm/preview_images.py
index 9539edbaf..b0f9792d7 100644
--- a/bookwyrm/preview_images.py
+++ b/bookwyrm/preview_images.py
@@ -344,6 +344,7 @@ def generate_edition_preview_image_task(book_id):
 
     save_and_cleanup(image, instance=book)
 
+
 @app.task
 def generate_user_preview_image_task(user_id):
     """generate preview_image for a book"""
diff --git a/bookwyrm/settings.py b/bookwyrm/settings.py
index ce5c4547d..b3ba312f9 100644
--- a/bookwyrm/settings.py
+++ b/bookwyrm/settings.py
@@ -41,10 +41,10 @@ DEFAULT_AUTO_FIELD = "django.db.models.AutoField"
 
 # Specify RGB tuple or RGB hex strings,
 # or "use_dominant_color_light" / "use_dominant_color_dark"
-PREVIEW_BG_COLOR = "use_dominant_color_dark"
+PREVIEW_BG_COLOR = "use_dominant_color_light"
 PREVIEW_IMG_WIDTH = 1200
 PREVIEW_IMG_HEIGHT = 630
-PREVIEW_TEXT_COLOR = "#FFF"
+PREVIEW_TEXT_COLOR = "#363636" # Change to "#FFF" if you use "use_dominant_color_dark"
 PREVIEW_DEFAULT_COVER_COLOR = "#002549"
 
 # Quick-start development settings - unsuitable for production
diff --git a/bw-dev b/bw-dev
index c2b63bc17..95681b115 100755
--- a/bw-dev
+++ b/bw-dev
@@ -107,7 +107,10 @@ case "$CMD" in
     populate_streams)
         runweb python manage.py populate_streams
         ;;
+    generate_preview_images)
+        runweb python manage.py generate_preview_images
+        ;;
     *)
-        echo "Unrecognised command. Try: build, clean, up, initdb, resetdb, makemigrations, migrate, bash, shell, dbshell, restart_celery, test, pytest, test_report, black, populate_feeds"
+        echo "Unrecognised command. Try: build, clean, up, initdb, resetdb, makemigrations, migrate, bash, shell, dbshell, restart_celery, test, pytest, test_report, black, populate_feeds, generate_preview_images"
         ;;
 esac