Going back to what others have said about recreating the logo as a .xar vector, there is a fairly quick and easy way to do it with the magic lasso tool. You just click around each shape to select the area of the photo and copy and paste to cut out the selection as a vector shape. Then just change the fill of the new shape from bitmap to vector and at the end you will have an accurate vector version of your logo that you can recolour and resize to your hearts content

Check out this video to learn the basics of using the lasso tool for this purpose. Here is a link to the finished version of the orchid illustration that I started in the video https://www.talkgraphics.com/showthr...tic-Lasso-tool and that thread also contains a link to the original thread that I created the video for.