Hi Paul,
First, there aren't any pictures attached -- you may want to try replying and attaching your pictures. If you run into issues (such as being told the files are too large), you can either try resizing them smaller on your computer, or use the alternate posting method I outlined here:
http://newlifegames.com/nlg/index.php?topic=11532.msg78481#msg78481For wrong colors, there isn't a setting you can adjust -- you likely have the wrong CAP/CAPX ROM installed in your machine. It won't affect gameplay, but colors can be wrong.
What happens to coins you insert? Are they rejected, or do they get eaten by the machine into the hopper but no credit given, or something else? The LED on the coin comparator will only be illuminated when the door is closed and latched, and there are no other tilts. In general, you will never see that LED lit. If it's rejecting all coins and you do have a sample coin inserted, I would recommend removing then reinserting the sample coin to ensure it is seated properly, and then also adjusting the sensitivity on the comparator to ensure that it is less likely to reject coins. See this post for directions:
http://newlifegames.com/nlg/index.php?topic=14459.msg77832#msg77832For your bill validator, it's tough to diagnose the issue without seeing it. If you can post a video on YouTube and post a link to it here, it would be very helpful to see and hear exactly what it's doing. When troubleshooting bill validator issues, use only $1 bills in good condition to eliminate any possible sources of confusion of the issue(s) you are having.