You can purchase brake caliper paint that goes on with a brush or use high temperature spray paint. You have more color choices with the spray and it is easy to touch up but you will spend more time doing the job due masking off what you don't want painted. Both are available at most auto parts stores

__________________
X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas