Drop Down List that sorts from another sheet

I have 2 sheets. I need a drop down list in sheet 1 that sorts data from sheet 2 based on a certain criteria. See pictures. I need B2 in sheet one to display a list from sheet 2. For example, If "boot" were entered in A2 of sheet one, I need B2 in sheet one to display the following items in a drop down list: Red, White, Blue, Moss Green. Please advise

Sheet 1Sheet2