I don't use pc's much with 'quality' color corrected monitor setups. I usually use devices which sense the monitor's colors, and creates an adjustment profile. I think there may be one on the PC, and perhaps one under the Photoshop set of stuff (Maybe Adobe makes a stand alone version.).

The other way if you are just going for your own visual aethetics, is to find out how to get to the monitor's setup menu, usually some button on the front these days, and adjust the color settings, in particular it sounds like 'saturation' is what you want to control, as in reduce the saturation.

Unfortunately if you want to send your art work to a 'real live printer' or output via some photo service... this does not work... you have to at least go through one of the calibration techniques, to get your monitor at least in the ballpark of representation of the image data so that you will not be maximally astonished when you print/output the results.

Also there are differences between how Mac's and PC's (Windows...) represent image data, and the PC is usually a bit more contrasty and often seems 'darker', except in 'bright' areas... I think it has to do with the business ancestry of the PC and how for the longest time on DOS/Win-9x most uses of PC graphics were for business charts, and the like, and not for artistic representation.

The Mac was often the machine of choice for artists so the images are presented a bit more 'flat', and higher value.