A CRJ200 First Officer's concerns about high brake temperatures received scant attention from the Captain.

Narrative

While at the gate with the boarding process completed the Captain noted that he hoped the left outboard brake would cool down. When I looked I noted that the Brake Temperature Monitoring System (BTMS) indicated it was white and 8; all other brakes were still in the green. I was concerned; but figured it might have been a glitch; as during my enroute inspection; I noted nothing unusual with the brakes. Also; we had this aircraft from the previous flight with no unusual occurrence. We did not have an APU and required an air start. Once we began taxiing from the gate I noted the Captain kept the right engine spooled fairly high; during the cross bleed start. Once the left engine was on line he kept both engines spooled fairly high and I noticed the BTMS now indicated that the left outboard brake was white and 9; the left inboard and right inboard were white and seven. The right outboard was still in the green. We were told to expect a slight delay going into ORD and were held short of the runway. The Captain set the parking brake and kept the engines spooled up around 40-50% N1. I told him he might want to be careful and go to flight idle as the brakes were too hot for takeoff. He was not concerned. I then explained to him that there was a number that once reached we could not depart. He said he wasn't aware of that; grabbed the QRH and glanced through it. I asked Tower how long we could expect further delay as the BTMS climbed to 10; 9; 9 and 8. I was told to expect takeoff clearance in 30 seconds. The Captain explained there was no such restriction noted in the QRH. Then we were given the takeoff clearance; but the Captain continued to peruse the QRH. I reminded him that we were cleared for takeoff; but he seemed disinterested. About 30 seconds after the takeoff clearance was given the Captain said we would takeoff; but delay bringing the gear up. It was my leg and once at 80 KTS I noted the BTMS reading 10; 9; 9 and the right outboard showed green.