B4J Question [ABMaterial] changing the theme of a container during runtime .. refresh container doesnt work

[MbedAndroid]

when i click on a label which resides in a container the labelcolor and the container theme is changed. This only works when i reload the page.
I can refresh the labels in the container, but cont.refresh doesnt update the new theme. A bug? or is another approach needed?
example:

    lbl1.refresh
    lbl2.refresh
    cont1.refresh

    ABMShared.NavigateToPage(ws, "", "./" & InitialPage)