how to change sublime theme color(sidebar or anything) (coffe dark roast and material theme as example)

first install desired theme like material or coffee roast.
Second install package resource viewer using package control.
Go to command palate (ctrl + shift + p) and search for "package resource view extarct"
Extract your appropriate theme. 
Now go to preference > browse package. 
open <theme>.sublime-theme
Search the color value which your side bar currently has. 
In case of material theme color value is "38, 50, 56" 
In first occurrence is look like "layer0.tint": [38, 50, 56] 
Select this color and type (ctrl + d) for all occurrence. and paste your desired color. Here is the problem. You will find some theme don't use color for side bar. like coffee theme use background image. In coffee theme it looks like "layer0.texture": "Theme - Coffee/Dark Roast/sidebar-background.png".
So in this case what you should do? delete the line and paste following line "layer0.tint": [38, 50, 56]. 
Here rgb value is 38, 50, 56. change this rgb value to your favorite color