Got it, Thank you!

It explicitly says it "allows you to change the background of the list" 

(and yes I can see clearly above it states the API is in beta)

Andrey, 

to be helpful to the next person asking/looking at this question, your code above is using the good list, but it is changing the button colors, not the background of the list. The list is still black and if you change the code

GList1.Color= 0xFFFFFFFF;

to any other color it's not changing the color of the list. The GOOD_LIST background stays black. Unfortunately for Damian, the support ticket of 9195 was left answered by "the new list has limited functionality at the moment and will be refined" and that ticket is also 12 months old. (I mean no offense to Dmitry, as I know Iridium is a huge platform with many priorities that need attention and you guys have done a great job.)

These commands don't work, but probably should per the Iridium documentation:  http://dev.iridiummobile.net/List_API#Свойства_2

GList1.Color= 0x########; //<-your color here

we know this doesn't work. The result is always a solid black background

As Damian discussed in ticket 9195 and I've experienced:

GList1.GetState(0).FillColor = 0xFFFF00FF; 

errors with: "Tried to use null as an object"

and from what we have in the code up there, and in the LIST API Documentation:

IR.GetItem("Page 1").GetItem("GList1").Color = 0xFFFF00FF; 

will not work either.

When will the GList1.Color or some other command to change the background be available?

Please and thank you,

Lance

IR.GetItem(page/popup).GetItem(good_list).Color

Doesn't seem to work for a good_list either. If you can get it work, I would love to know how!

One last thing I'd like to add. It seems when grabbing the Modbus RTU and dragging it into my device list, it does create the device and still does not show the host line just like I showed. Upon reopening the panel and server projects, the host line appears. So this was probably working, just not until I reopen the file...

Version is v1.1.3.19396

I updated like two weeks ago, but before that I think it was pre v1.

I noticed I was missing things like routine and schedule in the server studio so I updated to my current version. I'll do a full reinstall and see if it shows up. Thanks !