Without Javascript or jQuery it's possible customize the style for <input type="file" />. It's only available in -webkit. For more information and examples checkout: http://kcy.me/xfjd // http://kcy.me/xfje

custom-input-file.css

.myClass::-webkit-file-upload-button {
  visibility: hidden;
}
.myClass::before {
  content: 'Select some files';
  display: inline-block;
  background: -webkit-linear-gradient(top, #f9f9f9, #e3e3e3);
  border: 1px solid #999;
  border-radius: 3px;
  padding: 5px 8px;
  outline: none;
  white-space: nowrap;
  -webkit-user-select: none;
  cursor: pointer;
  text-shadow: 1px 1px #fff;
  font-weight: 700;
  font-size: 10pt;
}
.myClasshover::before {
  border-color: black;
}
.myClass:active::before {
  background: -webkit-linear-gradient(top, #e3e3e3, #f9f9f9);
}