RULE  SELECTOR          (a,b,c)  COLOR
R2    td                (0,0,1)  #55607a
R3    .price            (0,1,0)  #0b6b5e
R4    tr.express td     (0,1,2)  #b3261e
R5    #prices .price    (1,1,0)  #1d2433
R6    td.price          (0,1,1)  #d9822b
S0001 price cell: R5 #prices .price -> #1d2433; without R5: R6 td.price -> #d9822b
S0002 price cell: R5 #prices .price -> #1d2433; without R5: R4 tr.express td -> #b3261e
