what do you want to produce- a topography object in Revit that has coloured faces ??
The outcome from the other post in this forum that you recently replied to ( Topography colouring - Packages - Dynamo (dynamobim.com))- was that a topo object basically has one colour- although a fudge was to use coloured model lines.
The only other option I can think of is to split the topo into subregions, and give each subregion a colour- but this is probably not desirable.
The topography tools in Revit are pretty poor (in my opinion)- so I’d suggest an application such as Civil3D, QGIS, Rhino, 3DS, even SketchUp could do this relatively easily
Andrew