When you say creative use of color and fabric, Stacey Graves comes to mind. Stacey makes the most adorable outfits! They make me smile. Here are a couple that she made for her WellieWisher doll and a 16" ball and joint doll by Connie Lowe. She has modified the LUB Simply Summer Sundress pattern for these cute little outfits!
Want to see more from Stacey? Here is the link to her Etsy Shop, Traveller 240.
And here is the link to the LUB Simply Summer Sundress for Wellies. It is also available for other size dolls.