[header] How to create material in gimp to use in sculptris [title] Start up gimp and create a new file. [step] File] ] new or ctrl + n [title] Select the primary color that you want your material to be. [step] Once you have it selected, click on the bucket fill tool and fill your square with the primary color. 
In the case of the screenshot, the square will be a shade of blue. [title] Using various brushes, tools, and filters, create a look that you like.