arrow indicator on different session opening

hello,

some genius can surely do this,is it possible to make an indicator which appears on chart on opening of different session opening,just an different colour arrow show up untill the session is closed.

tokyo=red

europe=green

US=white

sydney= blue

i-sessions

Here's one place to start.

http://www.forexfactory.com/showthread.php?t=194811

some example like this...surely it can be very helpful

I have this indicator but it gets little messy with so many indicators and colours,can it be simplified with just small arrows?

Dear smjones

yes it is closer to what i am looking for but still it is complex,and makes chart messy.

and it will be ausm if an option can be made by which previous arrow can be made visible or invisible as per one wishes.

wow ausm

is it possible to add one more option by which we can turn ON or turn OFF previous arrows and can just see the last session open arrow.

i hope i am not asking many question