The contrast of the resizers is very low. Some people don't even notice them and only use the menu.
1) make them more visible
2) highlight them when we go into the Responsive Mode (pink to dark blue for example)
Met another person who didn't notice them.
Created attachment 642010 [details] [diff] [review]
Comment on attachment 642010 [details] [diff] [review]
[Approval Request Comment]
Bug caused by (feature/regressing bug #): new Responsive Mode feature
User impact if declined: feature might misunderstood
Testing completed (on m-c, etc.): local, fx-team
Risk to taking this patch (and alternatives if risky): just image change
String or UUID changes made by this patch: none