setPixelColor(p, c);
setPixelColor(p, r, g, b);
p
[uint8_t]: The pixel to set, 0 to 9.c
[uint32_t]: 24-bit RGB color value, 0xRRGGBB.r
[uint8_t]: 8-bit red value, 0 to 255.g
[uint8_t]: 8-bit green value, 0 to 255.b
[uint8_t]: 8-bit blue value, 0 to 255.