colour for chart x axis

I

ismail

Could anyone help me in this issue.....Please
actually in my chart
x axis is all the dates of the month...and
y axis is sales amount....
can i give different colour to weekend dates....in the x axis..
for ex. i want to highlight the sundays..in RED COLOUR...

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20.....31

here i would like to give red colour the numbers 3,9,16...etc


Thanks and Regards
 
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