ng-repeat :filter by single field
Specify the property (i.e. colour) where you want the filter to be applied:
<div ng-repeat="product in products | filter:{ colour: by_colour }">
See the example on the filter page. Use an object, and set the color in the color property:
Search by color: <input type="text" ng-model="search.color">
<div ng-repeat="product in products | filter:search">