When in the accounting module, you have a list of all the invoices created. Normal color is grey, but when cancelled they become a lighter grey and when still open (pending payment) the become black. 

These colors are applied via inline CSS, and then I don't know where this information is stored. I would like to change colors to something easier to discern and/or add bold and strikethrough styles. 

Does anybody know where I can change this? I don't know if it is an XML file in the server, or view configuration. 

Thanks!