Take User To Different Page

Based on users selection from two drop-down lists I want to take them to a page specific to that combination when they click a button. For example, In the first drop-down, the user selects from a list of colors (red, blue, or green).

In the second drop-down, they choose the type (car, van, truck). When they click a button, I want to take them to page specific to what they selected - say a red truck (redtruck.htm). I am not sure how to combine IF or CASE statements with button action.