Arduino Nano NeoPixel Button Loop

I have a simple NeoPixel Sketch for the Arduino Nano. This is loosely based on the NeoPixel Adafruit buttoncycler example sketch and the tweaking4all examples [login to view URL] This sketch cycles through 4 different NeoPixel effects at the press of a button. The button uses the ezbutton library for debounce. The limitations of the current sketch is that I have to wait for each NeoPixel pattern in the cycle to complete before I can press the button and cycle forward to the next pattern. Each pattern has a delay(), which I understand to be not best practice. Sketch to be modified is attached to the Project. Project requirements: Refactor the sketch so that: - Each pattern loops indefinitely (currently each pattern only plays once) - Interrupt any of the 4 patterns with a button press to cycle forward to the next pattern - Remove reliance on delay(0) function Other information: Patterns: 0: All pixels off 1: Strobe flash with 1 second delay 2: Red colorWipe 3: Blue colorWipe 4: Red Fade in/out Button Pin: 7 NeoPixel Pin: 6 # of Pixels: 4 This is considered a super simple project / sketch and the refactoring effort should be small (<1 hour work). Proposals over the project budget will be ignored.