How to make Portfolio links to change color on hover

To make portfolio links to change color on hover, you can follow these.
#1. With Portfolio Grid Overlay/Grid Simple – Same color
Use this to Custom CSS box

a.grid-item:hover h3 {
    color: #f1f;
}

#2. With Portfolio Grid Overlay/Grid Simple – Each link will have a different color
You can use CSS code like this.

a.grid-item:nth-child(1):hover h3 {
    color: #f1f;
}
a.grid-item:nth-child(2):hover h3 {
    color: red;
}
a.grid-item:nth-child(3):hover h3 {
    color: #fff;
}
a.grid-item:nth-child(4):hover h3 {
    color: black;
}

#3. With Hover Background/Hover Fixed/Hover Follow Cursor – Same Color
Use this to Custom CSS box

a.portfolio-hover-item:hover * {
    color: #f1f;
}

#4. With Hover Background/Hover Fixed/Hover Follow Cursor – Each link will have a different color
Use CSS code like this

a.portfolio-hover-item:nth-child(1):hover * {
    color: #f1f;
}
a.portfolio-hover-item:nth-child(2):hover * {
    color: red;
}
a.portfolio-hover-item:nth-child(3):hover * {
    color: #fff;
}
a.portfolio-hover-item:nth-child(4):hover * {
    color: #000;
}