Simply load both your photo and the painting (or whatever image you’d like) into Photoshop. Make sure your photos is the active window, and then go to Image->Adjustments->Match Color. Select the painting as your source, and tweak the sliders to suit your taste. Whenever you find a painting you like, keep them in a directory to slowly build up a collection of “filters”. You can also mimic the look of different films by using film photos as the source!