My Art Rage version is 5.0.3.
I work with an iMac, version 10.7 and Wacom stylus.
I have started creating a personal toolbox just to work in watercolors mode. I selected a watercolor paper for the background.
I paint with the basic watercolor brushes and blending them with the Palettes Knifes.
If someone needs to see what type of brushes I used, I can send you a screenshot of my Toolbox. I hope these explanations are useful.
Click image for larger version. 

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