Aetherlab Panel UI Kit — single-framed panels and buttons

The laboratory rather than the forge: cold navy, pale blue trace, aether cyan for anything active. Measured rather than cast, and the panels are proportioned like instruments.

Two nine-slice panels — a single-framed window frame with 0 px corners and a recessed inset frame with 0 px corners — cover almost every box a menu needs: dialogs, inventory grids, list backgrounds, tooltips and stat panels. A single continuous border keeps the panel quiet enough to sit behind dense text. Both stretch cleanly to any size because the corners never scale and the centre is a flat fill.

On top of the panels sit four chamfered button states: default, hover, pressed and disabled. They are drawn on the same 144×36 base with 0 px corners, so you can swap the texture on a single button widget and get the whole interaction loop without moving a rectangle. The pressed state drops its face two pixels and removes the top highlight rather than just darkening, which is what makes a button feel clicked rather than merely recoloured.

Everything ships twice. The SVG sources are the files the kit was drawn in — open them, change the six lab navy tones or the single aether cyan accent, and re-export. The PNG exports are flat, transparent and pre-scaled at 1x, 2x and 4x for engines that want bitmaps, with no premultiplied alpha and no baked-in shadow outside the sprite bounds.

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