The color will get lighter with AG. The key with a PM to keep it lighter is to add 1/2 the extract for the last 15 minutes only.
I switched to AG to get more control over color. I used to only use DME as my base malt and then PM the rest. I also tried a PM with half of my base malt included in the PM.
Primary 1: Oatmeal Coffee Stout
Secondary: American Mild IPA
Keg 1: English Bitter
Next up: Double IPA for friend, Kolsch, Graff, American Wheat, Dunkleweizen.