3D渲染光泽色彩混合圆形图标矢量元素

128x128 iOS Apple app icon for style transfer. Reference: 03-train-lora.png: colorful direct objects on rounded tile. Object: three overlapping colorful glossy circles or swatches. Palette: bright red, green, blue, purple, white highlights. Soft gel 3D, bright friendly gradient, one simple concrete object, centered, readable at small size. No black edge/corner/shadow/frame/canvas. White or transparent-looking outer padding, 6-10px. No meaningless white card, extra frame, border panel, container, neon HUD, cyberpunk, text, letters, logo, watermark.