Thanks... I tried it:
//-----thumb.store('title', parts[1].length > 0 ? parts[1] + ':' : ' '); THIS IS TO REMOVE THE : THIS ONE IS DEFAULT//
thumb.store('title', parts[1].length > 0 ? parts[1] : ' ');
but will it only work for new images? It's not removing colons from existing images:
portfolio-slideshow.php
Thanks