Storyline: Customizable Accordion Freebie

I'm using this template but my pages are different colours. Is there a way for the colours to transition as the bar moves across? For example, if the Record Keeping page was green, could the grey lined page slowly get smaller as a green page gets wider as the Record Keeping bar moves across? Hope that makes sense. Thanks.

Can you please help me find the steps to create this accordion?

I can't wait to use this! Love it!!

This is just awesome, very good. inshallah i will use this.

Thanks for sharing!

Thank you! Fun stuff

Many thanks!

This is so awesome!! Thanks for sharing.

This is such an incredible idea Ashi. I just have adopted and now pretty hopeful it would work for us as well. Thaks again :)

Does anyone have this design flipped more top/down?