One thing that I hear a lot at the stamp store where I do demos is that people are intimidated by coloring. I try to always assure them that there is NO need to be - you can make any image gorgeous just by keeping it simple! This card is a great example! There is NO coloring on this (gasp!) - just the image and sentiment stamped in white ink on a dark raspbery-like paper. The Lockhart Pie in the Window image is a great choice for something like this - the image is so beautifully detailed that your eye is drawn in to take a closer look. The 'pie oh my' sentiment is a natural choice, too.
You should really give this a try! It's a great technique to do when you're tight on time or if you just want to try something new. Have a great day! Be well.