Hello @jaroh,
We kindly request that you copy and paste the following CSS code to XStore >> Theme Options >> Theme Custom CSS >> Global CSS. After doing so, please clear your browser cache and check back to your site.
.wpcf7 form.sent .wpcf7-response-output {
color: #000 !important;
}
Resulting Screenshot: https://postimg.cc/bsYsMj16
Best Regards,
8Theme’s Team