Catching Elephant is a theme for Tumblr.
Please look through all the answers here before asking a question. The same questions keep coming up. A lot of customisation can be done with custom css. Try googling css background for example.Catching Elephant is a theme by Andy Taylor
Yep, with custom css. Google RGBA colours and change all three below.
.shadow:hover {
box-shadow: 0px 0px 20px rgba(0,235,255,0.8);
-webkit-box-shadow: 0px 0px 20px rgba(0,235,255,0.8);
-moz-box-shadow: 0px 0px 20px rgba(0,235,255,0.8);
}