I agree with Rene this a wonderful, evocative shot but it seems the bit of blue has been included very delliberately. Personally, I would leave it as it sugguest the continuation of the infinite sky. Also GMV.
What a place to search your soul. Certainly makes it a more inviting endeavor. The dark richness of the stones and the tables is wonderful. I have one suggestion. Crop in on each side to remove the sky on the outside of the square pillars (as little as possible to get rid of the blue. To me, this focuses my eye right down to the far depth of this image and I am not distracted to look to the sides. I am voting for it as it is, but think the crop would make it even stronger.--Rene