custom seekbar android

Hello, I just need a component, a custom seek bar. I want it to look like the ones that soundcloud dot com uses. here's a image that you can use as a background for the seekbar [login to view URL] so: i want it, while it progresses, to get orange. It can be ok with the lower part the same color. you can use a volume seekbar. PLEASE don't bid and say "i can do it". show me first a apk for me to test it or something else. This can be a 1h work for someone that knows how to make custom seekbars so the price will be paid accordingly.