Pixel art for a dark 2D side-scrolling action game set in...

Pixel art for a dark 2D side-scrolling action game set in China's Three Kingdoms era, around 200 AD. Muted low-saturation palette of dark blues, slate greys and earth browns with very small dull red accents. Large crisp pixels, flat shading, no characters, no people, no text, no UI. A game interface panel frame for a dark historical action game, seen straight on, square. A weathered dark iron-grey rectangular border with corner ornaments of tarnished brass, a thin inner gold line, the inside of the frame plain flat very dark blue-grey, empty. Ornate but restrained, pixel art, crisp large pixels, plain magenta background (#ff00ff) outside the frame only. No text, no icons. The background is one plain solid magenta colour (#ff00ff) with nothing else in it, for chroma keying.