Brown Tripoli (T-88) is used for the first (cutting) stage on aluminum, pair with an orange airway buffing wheel.
Black Magic (SS11-BM) used for cut on stainless steel at high rpm (~3,000-6,000) buffing wheel, pair with an orange airway buffing wheel.
Green Rouge (G-16) is used for the second (colouring) stage on aluminum, pair with a yellow airway buffing wheel.
Blue Rouge (SS-800) is used to achieve a final high-gloss show finish. The blue rouge is a slightly greasier composition, pair with treated or untreated white buffing wheel.