Tea-dyeing gives paper a warm tone, similar to the look of aged paper. It is useful for creating faux-aging effects, and also makes a beautiful, natural background for drawings, watercolors and prints. 

I am using these dyed papers for a series of greeting cards based on my Pussyflower project.  I found that the natural white paper of my watercolors felt empty when produced as a printed card. With dyed paper,  I gave my paintings an antique feel, and created visual interest in the blank areas of the greeting cards.