I used the online tool to fill out the form (https://pptform.state.gov/?Submit2=Complete+Online+%26+Print) and then printed it out in black and white and without instructions
Went to a USPS place and submitted it right there instead of mailing it in. Still took like a week until it finally showed up on the passport tracker and the received date was a week later. Not sure if it is faster if u actually mail it.
Make sure to have a photo copy of your naturalization certificate AND the original. If you don't submit a copy they will keep the original