help choosing theme

I currently have a fitness blog using the Greyized theme, which is awesome. However, I want to get away from the “urban” feel to something more natural. I created a new logo and would like suggestions for a theme that allows me to add the logo at the top, and allows me to edit the color scheme to match (Cerulean Blue & a light yellowish green). Also I would need to have image widgets.

I have searched to no avail. I appreciate any help.