button default colour in blocks editor

[Francesco Caló]

Hi, i'm working on my first app, for a school project.

In my quiz app buttons are in default colour. when users clicks the right answer the button becames green, but i need the colour to return to the default setting when the next question appears. how can i do it from the blocks editor? 

i know the used English is very bad. reply if you don't undestand.

thank you for the help.

Francesco

[Taifun]

your blocks look fine

do you also call that procedure somewhere to set the color back?

Taifun

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[Francesco Caló]

hi, i solved this broblem by changing to 0 in background colour, that looks like to be default colour. thank you