Hello Histonetters,
  Those offended by stupid questions-delete NOW.  OK, those that are still reading, I have made my first MMA blocks using Neil Hand's method and the blocks are brown in color.  Is this normal?  His method uses N,N Dimethylaniline to initiate the polymerization and I am assuming this is causing the color.  I just wanted to check and make sure I am doing this correctly.   There is no text book to check for this that I know of.  Neil's embedding mixture: 15 ml MMA monomer, 5 ml DBP, 5% dried benzoyl peroxide (1 gm) +125 ul of N,N Dimethylaniline.  
Thanks for any reply, 

Sarah Christo, HT (ASCP)
Texas A&M University
College of Veterinary Medicine
Dept. of Vet. Anatomy & Public Health
College Station, TX  77868-4458
schristo@cvm.tamu.edu