Please help us help you and fill where relevant:
Your LimeSurvey version: Limesurvey 6 (from version 6.4 and up)
Own server or LimeSurvey hosting: Own
Survey theme/template: respondage_vanilla
==================
I developed a new LimeSurvey 6 theme. Because I needed it. 
You may use it. For free. But please give feedback on how to improve.

www.respondage.nl/limesurvey-6-theme/  

Let's make a better world. 

Tammo

Thanks !! Great job !

Better on keyboard navigation than core included (still a lotto do) ,
There still some issue for THIS thele (and some for core, but where you can correct it in theme)

• Checkbox keyboard navigation is here, but need more contrast
   
  
• No contrast on ranking (unsure for the fix)
• Core issue : No way to go to change language dropdow (core issue, unsure if it work on 5.X or if i update something ?
• Core issue : Radio with checkbox 'Other input'