site color is not displaying suddenly after making changes in code

we bought a new magento theme and we customized as per our needs.

we changed color of lot of menus, texts...etc.

we want to speed up the site.

so we did CDN[content delivery network] for our site.

after we did CDN, color of our site changed to original theme color.

so again we changed the color of the site. but

the problem is color code i changed in files is saving, but it's not displaying in frontend suddenly.

it's taking some hours to display changed colors in frontend.

please help me to find solution.

thanks in advance.