Hi,
Easiest way is to sort the list so that all blue car rows appear together. If you want to retain the original order afterwards, use a helper column and number it 1,2,3 with a Series fill before the sort.
Now put the number 5 in a spare cell somewhere, and Edit Copy it. Now select all the blue car values and do an Edit PasteSpecial and choose the Add option and OK. This will add $5 to each of the selected values.
Now if necessary to get the data back to its original order, resort it based on the helper column.
HTH
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