I love the pops of color and the grey feature wall. I am starting to consider a "feature wall" theme within my space. I have a strong precedent image that has inspired me and I am working towards developing this into my own design.
Painting an old radiator ( & or pipes ) bright color makes it a piece of art. After painting the whole exposed ceiling in the basement one solid light color . Painting some of the pipes funky colors is going to be GREAT!