Removed margin-bottom rule on .alert class in alerts.less, Removed border-color rule on .alert-variant in mixins.less, Modified @state-info-bg in variables.less - was #d9edf7, now #4d5360, Modified @state-success-text in variables.less - was #3a87ad, now #fff, Modified @state-success-text value to #fff, Rebuilt CSS and JS due to changes.