.rok, .rok a { background-color: #FFFFFF; color: black;}  

.rok {border-width: 1px; border-style: dotted; border-color: black;} 

bila #FFFFFF white  
zluta #FFFF00 yellow
oranzova #FF9900
cervena #FF0000
ruzova #FF99FF
fialova #9900CC
svetle_modra #99CCFF
modra #3300FF
tmave_modra #000099
svetle_zelena #99FF99
zelena  #33CC33
tmave_zelena  #006633
svetle_hneda #CC9933
hneda  #993300 
tmave_hneda #660000