How may I change the color for a particular partner in a list of -to say something- customer invoices. 

I want all myCust invoices lines to be in red. But I also have MyCustomer as an alternative name so the "==" operator would not work.  And they actually have several branches (myCust UK, myCust SP, myCust FR) so I need to have an operator that admits all of them. Thank you in advance.