Edit the upload button style same as the submit button

How do I edit "SELECT IMAGE" button on my form so it looks like "Submit" button?

Inject this into the Image Preview widget within the Custom CSS tab, this should copy the submit button style.

button#pickImage {cursor: pointer; -moz-border-radius: .5em; -webkit-border-radius: .5em; border-radius: .5em; padding: 8px 18px; color: #ffffff; font-family: Arial, Helvetica, sans-serif; font-size: 12px; font-weight: bold; text-shadow: -1px -1px 0px #000000; border: 1px solid #000000; -moz-box-shadow: inset 0px 1px 0px 0px #999999; -webkit-box-shadow: inset 0px 1px 0px 0px #999999; box-shadow: inset 0px 1px 0px 0px #999999; background: #000000; background: -moz-linear-gradient(top, #666666 0%, #000000 100%); background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#666666), color-stop(100%,#000000)); background: linear-gradient(top, #666666 0%, #000000 100%); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#666666', endColorstr='#000000', GradientType=0 ); text-transform:capitalize; } button#pickImage:hover{color: #ffffff !important; border: 1px solid #000000; background: #1a1a1a; background: -moz-linear-gradient(top, #808080 0%, #1a1a1a 100%); background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#808080), color-stop(100%,#1a1a1a)); background: linear-gradient(top, #808080 0%, #1a1a1a 100%); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#808080', endColorstr='#1a1a1a', GradientType=0 ); }

Here's how: