Hi Sukriti,
First thank you for using our theme.
You will have the both feature in the premium version of WP Portfolio theme which will be release very soon.
For now to change the hyperlinks color go to Appearance -> Customize -> WP Portfolio Theme Options -> Custom CSS and paste the below CSS code then click on Save button.
a,
.main-navigation a,
.entry-title, .entry-title a,
.widget ul li a,
.site-info .copyright a {
color: #333;
}
Please edit above HEX color code #333
to your own HEX color code.
And for to hide the excerpts add below CSS code too in custom CSS option.
.post-main .post p {
display: none;
}
Could you also please help us rating this theme in WordPress Repository.
https://wordpress.org/support/view/theme-reviews/wp-portfolio
We really appreciate your rating.
Thank you for using our theme.