Appearance

• Image Fit (image_fit) — Crop to fill uses cover and may crop image edges; Show complete image uses contain and may leave empty space. Default: Crop to fill.
• Greyscale Until Hover (greyscale) — starts thumbnails in grayscale and restores full colour on pointer hover or keyboard focus. Default: No.
• Thumbnail Border Colour (img_border_color) — default: #e2e8f0.
• Corner Radius (radius) — 0 to 40px, default 16. Use 0 for square corners.

The module also adds a readable title gradient, centered play control, subtle shadow, hover feedback, and visible keyboard focus. Use source thumbnails with similar aspect ratios for the most consistent result.