This is one of those images that is so easy to color, because the shading is already done for you! Of course, you can add more shading if you are so inclined, but it really doesn't need it. You can use just one color and it will still look fab!
This blossom is from the Flowering Blooms cling stamp set, which is one of the DistINKtive stamps Stampin' Up! offers. There is a lot of fine detail, so this is definitely one you will want to ink with a sponge dauber for the best results. There is also a coordinating die set, called Flowering Dies. That pretty filigree edging is part of the set. I didn't even realize it was in there until I went to grab the die for this flower.
I thought the Purple Posy paired nicely with the Basic Gray DSP from In Good Taste, and there was just enough contrast with the Basic Gray card base. I dyed the Silver Metallic-Edge Ribbon with the Light Purple Posy Stampin' Blend Marker to make the coordinating bow.