Change specific bar colors in column graph

I have a column graph with about 10 bars and I want to change the color of 3 of those bars but I cannot find any option that let's me do that. I tried going to 'Themes and Layout' and assigning a color for a specific value in 'Manage Dimension Colors' but the bar with those specific values did not change color on the graph. Is there a solution for this? 

0 2 692