Clobetasol propionate Active Not Recruiting Phase 2 Trials for Rectal Adenocarcinoma / Colon Adenocarcinoma / Stage III Colorectal Cancer AJCC v7 / Stage IIIC Colorectal Cancer AJCC v7 / Stage III Colorectal Cancer / Stage IVB Colorectal Cancer / Stage IIIA Colorectal Cancer AJCC v7 / Stage IIIB Colorectal Cancer AJCC v7 / Stage IIIC Colorectal Cancer / Stage IVA Colorectal Cancer AJCC v7 / Stage IVB Colorectal Cancer AJCC v7 / Stage IIIB Colorectal Cancer / Stage IIIA Colorectal Cancer / Stage IVA Colorectal Cancer / Stage IV Colorectal Cancer AJCC v7 / Stage IV Colorectal Cancer Treatment