This paper intent to collaborate with some Archive's collection, where there are color slides with necessity to restore their colors. To make the restoration, this research considers the images which has the Kodak Q-13 Color target. The Kodak Q-13 reference color targets (Gray Scale and Color) were, at first, developed to evaluate and correct chemical color photographs and not for digital images. The purpose of this research is the development of a methodology which makes possible the restoration of colors and tones in the pictures through digital image processing. For this purpose, it was made the colorimetric study in these targets, and the development of the methodology for digital processing. The results indicate better color matching consistency for the Gray Scale target than the color one. Results obtained from the experiments using different methodologies to development, show that it is possible to accomplish color restoration of the pictures, which has used the Kodak Q-13 Gray Scale reference target.