Myklskc, IMHO the layout you want trumps color/finish. You will live inside day and night. You will wash/wax outside and about a week after you last saw the signature color you will probably forget what it looks like.
Don't assume, as many do, that the dealer is no good just because he says you can't get that color without buying Signature Series. Just do some research and see if they are reputable. You might mention who they are on this web site and some members may have used them.
Also, these units are not houses or cars. They are built OK, generally but not superior. Warranty work can be a hassle depending on your dealer. I have had my unit for about a year and have dealt with the mfgr to repair at a local RV authorized repair shop. Have never been back to the dealer, not because I don't think he would stand behind it but because it was more cost effective than driving 200 miles round trip but then again, I have not had any major problems. If your handy with your hands and use this forum you can remedy a lot of small problems at little cost or travel time to and from a dealer.
We have the Rockwood 2604WS with the Emerald Package. We looked at the 2703 but opted for a little lighter trailer. Loved the 2703 also. We bought the 2604 because of the layout and the other options that came with that package and we love. Lived in it for over a month on trip from Fl to Canada. Layout trumps color IMHO.
Good luck with your decision but unless your ready to wait for 8+ weeks or more don't let a good deal with something you like get away. Buying season is cranking up and the factory is booming from what I understand and lead time is pushing out. 8 weeks from now is middle of May?