Preview:
// Use the ColorFromPalette function to rotate through the rainbow by the colorIndex
//ColorFromPalette( paletteName, colorIndex[0-255], brightness[0-255], blendType[NOBLEND or LINEARBLEND])
leds[j] = ColorFromPalette(RainbowColors_p, colorIndex, 255, LINEARBLEND);
colorIndex += 15;  // Increment the colorIndex to change the color for the next LED
downloadDownload PNG downloadDownload JPEG downloadDownload SVG

Tip: You can change the style, width & colours of the snippet with the inspect tool before clicking Download!

Click to optimize width for Twitter