Maybe you need to see your dashboard in bright high visiblity colors? When accessing a Qlik Sense dashboard through your browser just put theme/highvis at the end when your on a sheet.

highvis

http://localhost:4848/sense/app/ %5C%5Cpsf%5CHome%5CDocuments%5CQlik%5CSense%5CApps%5CSales%20Discovery/ sheet/XuWLHFK/state/analysis/theme/highvis

Remove the spaces from the link above. Not always perfect but interesting.