I see Monarch have another HedKandi liveried 757 for the summer.
G-MONJ is the a/c in question.
See a couple of pics here
Aircraft.
http://www.jetphotos.net/viewphoto.php?id=6253799
Tail.
http://www.jetphotos.net/viewphoto.php?id=6253800
The tail colours are allegedly the original Monarch Uniform from 40 years ago !!
Looks great !!!!