Network HP F2100 under LXDE printing in draft greyscale: Advice please?(SOLVED)

[BJF]

Could I ask for a minute of your time please.
The F2100 is connected to a Compaq Desktop, and two laptops and a netbook talk to it wirelessly for print jobs via the Desktop. The printer has been installed using Printerdrake (PCC>Configure>Hardware>Configure Printers and Scanners) on all machines, locally on the Desk, remotely on the others. Whatever the default setup was, it worked but seemingly nothing I did stopped it eating colour cartridges at a prodigious rate as it made black words the hard way. The black cartridge (the cheap one) has been consequently immortal.
Tonight out of curiosity and frustration I looked in http://localhost:631 and modified the printer with the F2100 driver. This permitted a new choice of draft greyscale to be made which actually works!! locally. However preliminary trials show colour printing still taking place in calls from the wireless machinery.

Question: Will I need to similarly modify all the computers to get them to print draft from the network, and if so is there a quicker way to select colour printing as required without wading through the localhost:631 menu? Are there any pitfalls in making changes in remote machines to the network printer's setup?

Thank you for listening.

[BJF]

Oh, I'm soooo embarrassed!   

After sitting about waiting for somebody smarter than me to fix my problem, and wondering what was taking "the cavalry" so long, I got to thinking. I modified the driver on the netbook (most expendable install in case of screw-up's) to the F2100 item and printed. Blast! Still colour. Then I noticed that the print menu choices had expanded with the modification to include different paper sizes and, Hallelujah, all the print colour options. And greyscale draft.. Which is exactly what came out of the printer.

To all those who couldn't work out what I was on about, sorry I wasted your time. Quite a few things yield to a glass of good red wine and a bit of thought. This was one of them.

Thanks.