I’m experimenting with the PowerApps Controls Framework. It’s a preview and you can find the PCF sdk here
Using PCF you can build your own contols which you can integrate in Microsoft Dynamics 365 or in Canvas Apps, having full control of the content but not having to worry about the stuff around it: like position on the form, notifications…
As my first experiment I tried to make an autocomplete control showing the options from an OptionSet , including the colours customized for the options. Of course there is already an autocomplete control, I just wanted to try out to implement it by myself.
It works like this:
And that’s the configuration on the form:
Dianamics PCF Lady 
Please provide the source code
Sorry it took so long, but now this project is opensource: https://github.com/ORBISAG/ORBIS.PCF.ColorfulOptionset