accelerometer neopixel arduino nano -- 2

Hi i have accelerometer GY 521 and neopixel. I need write code, that neopixel change color when e.g. change axis Y or Z. Board is arduino nano. It will be controll one led strip neopixel (30 pcs led - one meter). There it will be push button and it will be change mode neopixel. First mode (change color via GY521), second mode rainbow color (independent GY521), third option blink colors (independent GY521)