Hello, @Bilal Hussain,
We are unable to view the image you have attached. Could you please provide a screenshot of the block text color that you would like to change? Additionally, please provide your WordPress Admin login details in the private content area of this topic, so that we can investigate the issue further and provide assistance accordingly.
Please note that it is recommended to take a complete backup of your site before proceeding.
You may upload the screenshots on https://postimages.org/ and paste the links here.
Best Regards,
8Theme’s Team