Thank you for all of your comments...I too like her shade of bay. It is commonly known as 'red bay'... or perhaps better known as 'blood bay'.
I feed her 'paprika' in the later winter months to start to 'prime' her spring coat. She also gets flaxseed. By springtime, she sheds her winter coat very quickly and has the prettiest 'purple/red coat.
However, if I let it, the summer sun quickly bleaches out her color. I usually flysheet her in the summer though.
You may or may have not heard...paprika is great at adding and darkening hair color. It's proven well for me and as you can see from the picture below...Rosie really likes it!!!