I think it’s definitely possible to do with those colors. Not everything has to be in your colors, and I think as long as you bring in a lot of vintage, homemade looking elements, you’ll be able to do it. I agree with pps about natural looking elements like wood, twine, and burlap. I also think that it would be fine if you had flowers that were not just blue, white, or yellow. You could definitely have the flowers you wanted and still get the point across that your colors are navy and gold. (You could also use gold spray painted branches in your floral arrangements)
Maybe you could think of it as a gold shabby chic wedding with navy accents. There are definitely a lot of shabby chic weddings with gold in them. You can just find ways to swap in the navy accents.
Here are just some ideas:
This bride had a navy, blush, and gold vintage chic wedding. You could do gold ink with the dark keys and navy ink with the gold keys.
These Bride and Groom signs are pretty cute, and you could definitely do the bride’s sign in gold and that would be really pretty.
She had navy blue tablecloths and gold accents, and I think some of what she did was pretty cool like the gold frames with pictures of different places.
Here’s the link if you want some more inspiration/pics from her wedding: http://theeverylastdetail.com/blush-pink-navy-vintage-chic-wedding/
You could find tiles like these and use them as table numbers, just prop them up on a little stand and attach a gold number to the center. Or you could find fabric similar to this and have gold frames with the fabric inside, and a gold number in the center similar to this –>
You could do gold tablecloths with a little bit of texture like ruching or crinkling –>
For the bride and groom’s table, you could use a tablecloth with ribbon roses like this, with a navy border around instead of the white one they have –>
You could serve drinks from mason jars with navy and gold striped straws. And you could hang some of those triangle flag banners (not sure what they’re called) in navy and gold patterns like chevron, polka dots, stripes, etc .. –>
You could even do white tablecloths like they did above with a navy and gold table runner going through, and perhaps navy napkins with gold utensils. (Or if your lodge has beautful wood tables, you don’t even have to do tablecloths, just show off the beautiful wood and add your colors as accents here are there, table runner optional.) Here’s an example of colored napkins with gold utensils. You could do the table runner with navy and yellow floral fabric, or just do the whole table cloth as navy and yellow floral fabric like they did a floral fabric below –>
You could even do mismatching tablecloths to add to the vintage shabby chic feel. Here are some examples of fabric:
Hope this helped!