Sell the biscuit and cut your loss now. Throw the money you get toward a replacement in a color that makes you happy and looks fantastic on the car.
Navy blue sounds interesting on a silver car, depending on the interior color. If the interior is red or black, I'd probably go black. If it is grey, parchment or blue, the navy would probably look great.
Good luck with it.
Ed Cave
Atlanta, GA
1971 280SL
1973 911S
2006 GS430
2007 328i Coupe