Conditional formatting formula for subtotals with colours in a requested range

Hi All

I have a spreasheet for doing costing with formula,however I am looking a formula in conditional formating in doing subtotals with same row colour in bold .

The spreadsheet is big, for the moment doing same with paste special and coloured subtotals rows in bold and red and using format table

Thus I am looking a formula in conditional formating in doing subtotals,alternate rows with their respective header change colour and the whole subtotals rows bold in red for easy reading .

See annexed for more explicit details

thanks