On clicking General settings you can see the new tab with two options Fonts & Typography and another Color Options.

Fonts & Typography

1. Blog Panel Text Alignment: Will change the allignment as selected (justifiy, left, right and the default as central) .
2. Primary Font : Controls the primary font
3. Secondary Font : Controls the secondary font
4. Text Size For Paragraph : Text size for paragraph as in px
5. Title Font size (small/Big)

Color Options

1. Background Color: Change the backgorund color
2. Primary Color: Change the primary color
3. Secondary Color: Change the secondary color
4. Button Background Color: Change the button backgorund
5. Button Text Color: Change the button text color