Select > Same > Fill Color

-Fills all shapes with color that are similar

i.e. graph bars and circle. direct select shape with color and then, follow through with these steps.

Graphs in Illustrator

Bar Graph
Stacked Bar Graph
Column Graph
Stacked Column Graph


Pie Graph
Radar Graph


Area Graph
Line Graph
Scatter Graph

Hotkeys for graph data:

A Entry text box Enter the data
B Import data Import data saved as a text file
C Transpose row/column
Switch the columns and rows of data
D Switch x/y
Switch the x and u axes of graphs
E Cell style
Adjust the column width or decimal precision of cells
F Revert Revert the changes you've made in the graph data
G Apply Apply the changes you've made in the graph data


Bridging between Excel and Illustrator:

Copying data from a spreadsheet in excel and pasting into the top left corner of the data table in Illustrator

Bar Graphs in Illustrator. Enter numbers to form size of bars in each column.

SOURCE:
https://helpx.adobe.com/illustrator/using/graphs.html