PURPOSE: To obtain a colored rubber compsn. excellent in the effect of controlling chalking by blending a colored rubber compsn. comprising EPDM as the main component with a predetermined amt. of a specific compd.

CONSTITUTION: A colored rubber compsn. comprising EPDM as the main component, wherein 100 pt.wt. polymer component comprising EPDM as the main component is blended with at least 10 pts.wt. high-molecular fatty acid ester (e.g. EXTON k-1 manufactured by Kawaguchi Chemical Industry Co., Ltd.) and/or a high-molecular polyhydric alcohol (e.g. PEG 400 manufactured by Toho Chemical Industry Co., Ltd.). In another colored rubber compsn. comprising EPDM as the main component, a silica filler and/or a CaCO3 filler is blended therein as a white filler.