fix #1113 - snackbar background color no longer visible due to regression
fix #1113 - snackbar background color no longer visible due to regression

brave/browser-ios,brave/browser-ios,brave/browser-ios,brave/browser-ios,brave/browser-ios,brave/browser-ios,brave/browser-ios,brave/browser-ios,Allow2CEO/browser-ios,Allow2CEO/browser-ios,Allow2CEO/browser-ios,brave/browser-ios,Allow2CEO/browser-ios,Allow2CEO/browser-ios,Allow2CEO/browser-ios,Allow2CEO/browser-ios,Allow2CEO/browser-ios