Uh, just a bit of warning... you aren't going to find a consistent authoritative reference on the NTSC color delay even from Atari. SALT tells you to match 1 and 15 and the PAL GTIA hardcodes that, but the Atari Hardware Manual has 1 and 15 labeled different. Then there are games like EPYX Summer Games that use color 15 for red and will show nasty flags if the color delay isn't set to push 15 beyond 1. There's no way to win with one particular setting.
We should probably establish a standard within the community and use it going forward.
I used to use the original Pac Man cart because getting all 4 ghosts the right color took careful adjustment.