Hello, @minimal,
1) To change the border color of the buttons, please navigate to XStore > Theme Options > Styling/Colors > BORDERED BUTTONS. Here, you can select or remove the Bordered Buttons Border Color according to your requirements. For a better reference, please refer to the image provided here: https://postimg.cc/mPwHt1HF
2) To change the border color of the buttons, please navigate to XStore > Theme Options > Styling/Colors > LIGHT BUTTONS. There, you can select or remove the Light Buttons Border Color as desired. For a visual reference, please see the image provided here: https://postimg.cc/KKKk8qrR
3) To change the border color of the buttons, please navigate to XStore > Theme Options > Styling/Colors > DARK BUTTONS. Here, you can select or remove the Dark Buttons Border Color according to your requirements. For a better reference, please see the image provided here: https://postimg.cc/5XzS2S59
We thank you for your interest in 8Theme’s products.
Best Regards,
8Theme’s Team