Different Colors on frame

[s.elison]

Hello everyone!
I need to set different colors on my canvas.
There is a way to set the frame fill color just in a specific area?
For exame:
From 0 to 33% and 66% to 100% the white color;
And 33%->66% grey color.

I was just thinking to put the signal area in evidence

Thanks!!!

[eguiraud]

Hi,
I am not an expert but @couet or @bellenot might be able to help

[bellenot]

Hi,

Maybe @couet will give a better advice (when back next week), but you could try to use a TGraphErrors, as shown in the ROOT Primer

Cheers, Bertrand.