different abrasives have different colours, after reading stuff here & there, Ive come to the conclusion that the Tandy stuff aint all that good, I have used it for years, not knowing there were better alternatives, I have just bought these...
http://www.ebay.co.uk/itm/360612828048?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
http://www.ebay.co.uk/itm/200905663189?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
rub onto a piece of card like whats on the back of an A4 pad, it does seem alot better.